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what is thermal energy ? thermal energy refers to the energy contained within a system that is responsible for its temperature . heat is the flow of thermal energy . a whole branch of physics , thermodynamics , deals with how heat is transferred between different systems and how work is done in the process ( see the 1ˢ... | almost every transfer of energy that takes place in real-world physical systems does so with efficiency less than 100 % and results in some thermal energy . this energy is usually in the form of low-level thermal energy . here , low-level means that the temperature associated with the thermal energy is close to that of... | does n't some of the energy from friction get converted into sound energy too ? |
what is thermal energy ? thermal energy refers to the energy contained within a system that is responsible for its temperature . heat is the flow of thermal energy . a whole branch of physics , thermodynamics , deals with how heat is transferred between different systems and how work is done in the process ( see the 1ˢ... | finding the change in total thermal energy $ \delta e_t $ of the box-floor system can be done by finding the total work done by friction as the person pushes the box . recall that the box is moving at constant velocity ; this means that the force of friction and the applied force are equal in magnitude . the work done ... | in the first question , the box has no acceleration which seems to imply there is no force applied ( which is obviously not the case here ) , so should i try to reason this out by saying that there is a force constantly applied to the box in order to overcome the force of kinetic friction , so the instantaneous velocit... |
what is thermal energy ? thermal energy refers to the energy contained within a system that is responsible for its temperature . heat is the flow of thermal energy . a whole branch of physics , thermodynamics , deals with how heat is transferred between different systems and how work is done in the process ( see the 1ˢ... | is there any change in the thermal energy of the persons shoes due to pushing on the box ? thermal energy from drag the force of drag on a moving object due to a fluid such as air or water is another example of a non-conservative force . when an object moves through a fluid , some momentum is transferred and the fluid ... | suppose we have an object that is 70 c and another object at 10 c ( these two objects are not close to each other ) , which one will cool faster ? |
reading—putting it all together subscore : command of evidence , words in context focus : completing two reading sets ( one single passage set and one paired passage set ) teacher note throughout these lessons to prepare students for the reading test , students have been practicing the individual skills somewhat separa... | direct students to look at the overviews in the student materials for this lesson . you may want to view [ this 2-minute overview ] ( ( /test-prep/sat/new-sat-tips-planning/about-the-sat-reading-test/v/about-sat-reading-test-what-to-expect ) of the reading test from khan academy® individual practice ( 30 minutes ) for ... | in paragraph 2 how did the moon cover the sun is n't the sun way bigger then the sun ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , what is the strength of the magnetic field ? assume that the radius of the circular path can be approximated by $ l^2/2d $ where $ l $ is the length of the tube and $ d $ is th... | why is the assumption that that radius of the circle in which the electron would move ( were it not stopped by the screen ) is equal to approximately ( l^2 ) / ( 2d ) valid ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | two objects containing charge with the same direction of motion have a magnetic attraction force between them . similarly , objects with charge moving in opposite directions have a repulsive force between them . in our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field . | similarly , objects with charge moving in opposite directions have a repulsive force between them '' ... ... .but is it the same charge or opposite charge ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | i do n't understand how magnetic force when perpendicular to the velocity gives rise to circular motion ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | what does 'in/out of the page ' mean ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | similarly , objects with charge moving in opposite directions have a repulsive force between them . in our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field . in this context the magnetic force is a force that arises due to interacting magnetic fields . | what is a magnetic field ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | old style 'tube ' televisions use this principle with magnetic deflection to form images by rapidly scanning the spot . exercise 2a : figure 3 shows a cathode ray tube experiment . a pair of coils are placed outside a cathode ray tube and produce a uniform magnetic field across the tube ( not shown ) . | why is example 2a related to the circular motion ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , what is the strength of the magnetic field ? assume that the radius of the circular path can be approximated by $ l^2/2d $ where $ l $ is the length of the tube and $ d $ is th... | so , this is n't a huge deal i think , but in question 2b , when it says `` d is the horizontal deflection '' , it means the amount the electron is deflected from its original path right ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | controlling the deflection allows the spot of light to be moved around the screen . old style 'tube ' televisions use this principle with magnetic deflection to form images by rapidly scanning the spot . exercise 2a : figure 3 shows a cathode ray tube experiment . | can i ask how magnetic deflection is projected or how it works ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | if we do n't know the magnitude of the magnetic field directly then we can still use this method because it is often possible to calculate the magnetic field based on the distance to a known current . the magnetic force is described by the lorentz force law : $ \vec { f } = q\vec { v } \times \vec { b } $ in this form ... | should n't it be `` in the page '' from the vector-cross product of the vector of `` ( negatively charged ) electron 's travel path '' & `` magnetic force '' ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | similarly , objects with charge moving in opposite directions have a repulsive force between them . in our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field . in this context the magnetic force is a force that arises due to interacting magnetic fields . | why is the magnitude of the magnetic field constant in the case of the horseshoe magnet presented in exercise 1 ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | written in terms of the angle $ \theta $ ( $ & lt ; 180^\circ $ ) between the velocity vector and the magnetic field vector : $ \boxed { f = qvb\sin { \theta } } $ the direction of the force can be found using the right-hand-slap rule . this rule describes the direction of the force as the direction of a 'slap ' of an ... | what is the difference between the left hand slap rule and the right hand slap rule ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | written in terms of the angle $ \theta $ ( $ & lt ; 180^\circ $ ) between the velocity vector and the magnetic field vector : $ \boxed { f = qvb\sin { \theta } } $ the direction of the force can be found using the right-hand-slap rule . this rule describes the direction of the force as the direction of a 'slap ' of an ... | when do we actually have to use these rules , if the question asks about any specific quantity 's direction ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | magnetic deflection of electrons in a cathode-ray tube a cathode ray tube is an evacuated tube with an electron gun at one end and a phosphorescent screen at the other end . electrons are ejected from the electron gun at high speed and impact the screen where a spot of light is produced on impact with the phosphor . be... | in the above question , 1a , how can we tell about the position of the electrons ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | electrons are ejected from the electron gun at high speed and impact the screen where a spot of light is produced on impact with the phosphor . because electrons have charge it is possible to deflect them in-flight with either the electric or magnetic force . controlling the deflection allows the spot of light to be mo... | can you define electric flux clearly ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | in response to the field , the electrons are deflected and follow a path which is a segment of a circle as shown in the figure . what is the direction of the magnetic field ? exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , w... | what should i do if i am asked to look for the direction of a charge in a magnetic field that goes from left to right ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | magnetic deflection of electrons in a cathode-ray tube a cathode ray tube is an evacuated tube with an electron gun at one end and a phosphorescent screen at the other end . electrons are ejected from the electron gun at high speed and impact the screen where a spot of light is produced on impact with the phosphor . be... | how can we correlate electrons and magnetism i mean how can rotating electrons produce magnetism ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | in response to the field , the electrons are deflected and follow a path which is a segment of a circle as shown in the figure . what is the direction of the magnetic field ? exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , w... | what is meant by direction of magnetic field ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , what is the strength of the magnetic field ? assume that the radius of the circular path can be approximated by $ l^2/2d $ where $ l $ is the length of the tube and $ d $ is th... | i did not understand { f= b i l sin theta } .what is this formula and what are b , i , l ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | old style 'tube ' televisions use this principle with magnetic deflection to form images by rapidly scanning the spot . exercise 2a : figure 3 shows a cathode ray tube experiment . a pair of coils are placed outside a cathode ray tube and produce a uniform magnetic field across the tube ( not shown ) . | i have problem with the basis of cathode ray tube experiment , how is the formula derived ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | similarly , objects with charge moving in opposite directions have a repulsive force between them . in our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field . in this context the magnetic force is a force that arises due to interacting magnetic fields . | what is magnetic flux and flux density ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , what is the strength of the magnetic field ? assume that the radius of the circular path can be approximated by $ l^2/2d $ where $ l $ is the length of the tube and $ d $ is th... | where does circular stuff come into play ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , what is the strength of the magnetic field ? assume that the radius of the circular path can be approximated by $ l^2/2d $ where $ l $ is the length of the tube and $ d $ is th... | is it an imagination like `` if the path of this deflection is continued ... '' ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | would you expect any change in the force on the wire ? exercise 1c : suppose the strength of the magnet was not known . can you suggest a way to modify this experiment to measure the strength of the magnetic field ? | what is the lorentz law mentioned in exercise 1c ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | the magnetic force is fm = qv x b , but how do you describe the force between two magnets repelling or attracting each other ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | or maybe as an example what is the force between a magnet and my fridge ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | similarly , objects with charge moving in opposite directions have a repulsive force between them . in our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field . in this context the magnetic force is a force that arises due to interacting magnetic fields . | what is the magnetic field of a circular magnet ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | written in terms of the angle $ \theta $ ( $ & lt ; 180^\circ $ ) between the velocity vector and the magnetic field vector : $ \boxed { f = qvb\sin { \theta } } $ the direction of the force can be found using the right-hand-slap rule . this rule describes the direction of the force as the direction of a 'slap ' of an ... | is there any abstract way to define the direction of the force without resorting to those `` hand rules '' ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | this can be done by rearranging our previous expression . if we recall that velocity is a distance / time then if a wire has length $ l $ we can write $ qv = \frac { ql } { t } $ and since current is the amount of charge flowing per second , $ qv = il $ and therefore $ \boxed { f = bil\sin { \theta } } $ force on a wir... | in exercise 1a , how is the flow of electrons the reverse of conventional current ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | is the electric force and the electric field the same as the magnetic field and the magnetic force ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | old style 'tube ' televisions use this principle with magnetic deflection to form images by rapidly scanning the spot . exercise 2a : figure 3 shows a cathode ray tube experiment . a pair of coils are placed outside a cathode ray tube and produce a uniform magnetic field across the tube ( not shown ) . | in exercise 1a howcome the electrons are moving `` up '' in the diagram ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | in response to the field , the electrons are deflected and follow a path which is a segment of a circle as shown in the figure . what is the direction of the magnetic field ? exercise 2b : if the electrons are known to be ejected from the electron gun horizontally at a speed $ v $ of $ 2\cdot 10^7~\mathrm { m/s } $ , w... | for the magnetic field direction of the horseshoe is it my right or your right ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | what is the difference between a magnetic force and a magnetic field ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | because electrons have charge it is possible to deflect them in-flight with either the electric or magnetic force . controlling the deflection allows the spot of light to be moved around the screen . old style 'tube ' televisions use this principle with magnetic deflection to form images by rapidly scanning the spot . ... | why is 25mm named the horizontal deflection , and not the vertical deflection ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | is magnetic force an external or internal force ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . | the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature what does this mean ? |
what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . it occurs whenever objects interact in which there is charge in motion . two objects containing charge with the same direction of motion have a magnetic attraction force between... | what is the magnetic force ? the magnetic force is a consequence of the electromagnetic force , one of the four fundamental forces of nature . | why is the magnetic force between charges in motion why not stationary charges ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . | if the kkk is a `` white supremacist terrorist group , '' why are n't its members treated they same way the government treats members of other ( international ) terrorist groups ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | it is estimated that the kkk performed over 3500 racially-motivated lynchings in the south between 1865 and 1900 . furthermore , white republicans who sympathized with african americans , decried as “ carpetbaggers ” and “ scalawags , ” were frequently attacked . democrats relied on the klan to secure election victorie... | it makes me wonder why many other countries used the system of slavery at some point of their history but none of them ended up with a terrorist organization that hates and kills african americans , is it because the federal government was too lenient ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . | why did the hatred for blacks grow with such strength ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | it is estimated that the kkk performed over 3500 racially-motivated lynchings in the south between 1865 and 1900 . furthermore , white republicans who sympathized with african americans , decried as “ carpetbaggers ” and “ scalawags , ” were frequently attacked . democrats relied on the klan to secure election victorie... | how did african americans first respond to the eventual news that they were being targeted , because of their skin color again ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . | what were the significance of their disguises ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | the klan also worked to restrict the african american laboring class by incapacitating black economic empowerment . any white people who encouraged black economic autonomy , like merchants who purchased cotton from black farmers , were also threatened , beaten , and killed . the klan disassembled african american and r... | what is the difference between people then hiding themselves while preaching white superiority to now , where people proudly display their beliefs in white nationalism ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | at its height in the mid-1920s , the kkk had four million members nationwide dedicated to intimidating , torturing , and killing african americans and allied activists . the kkk still exists today . what do you think ? | where does the modern-day kkk generally work , or what is their current `` mission statement '' ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . | should organizations like ku klux klan be allowed to legally exist ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | at its height in the mid-1920s , the kkk had four million members nationwide dedicated to intimidating , torturing , and killing african americans and allied activists . the kkk still exists today . what do you think ? | how come the kkk still exists today ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | it is estimated that the kkk performed over 3500 racially-motivated lynchings in the south between 1865 and 1900 . furthermore , white republicans who sympathized with african americans , decried as “ carpetbaggers ” and “ scalawags , ” were frequently attacked . democrats relied on the klan to secure election victorie... | why did the kkk also target people of their own race such as `` carpetbaggers '' and `` scalawags '' ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . | what are all of the amendments did the ku klux klan violate ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | the klan committed acts of violence primarily undercover , wearing the disguise of a long , flowing white robe and hood , capped by horns . they sometimes claimed to be ghosts of confederate soldiers . the klan primarily performed heinous crimes against african americans , especially those running for office in the sou... | just a quick question , why were the ku klux klan referred to as the `` ghosts of confederate soldiers '' ? |
overview the ku klux klan was a white supremacist terrorist group that emerged during reconstruction . it took egregious , violent steps to undermine the republican party , hoping to maintain black economic instability and ensure white racial and economic superiority in the antebellum south . congress countered the kkk... | it is estimated that the kkk performed over 3500 racially-motivated lynchings in the south between 1865 and 1900 . furthermore , white republicans who sympathized with african americans , decried as “ carpetbaggers ” and “ scalawags , ” were frequently attacked . democrats relied on the klan to secure election victorie... | what was so terrible that was done to them to want to lynch , kill , or torture african americans ? |
poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . in the mid 20th-century , p... | poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . | which disease is a close relative of polio ? |
poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . in the mid 20th-century , p... | you are most likely to get a poliovirus infection through contact with infected feces . however , you can also get it through direct contact with someone infected with the virus , who can be contagious without exhibiting any symptoms , and who can spread the virus via their feces , for weeks . in fact , polio is so con... | how can someone increase there luteinizing hormone , lh levels ? |
poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . in the mid 20th-century , p... | this weakens the muscles we use to speak , swallow and breathe . bulbospinal polio : about one in five people with paralytic polio have both bulbar and spinal infection . in these cases , the poliovirus also infects the upper part of the cervical spinal cord , causing paralysis of the diaphragm . | in what case is polio fatal ? |
poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . in the mid 20th-century , p... | this weakens the muscles we use to speak , swallow and breathe . bulbospinal polio : about one in five people with paralytic polio have both bulbar and spinal infection . in these cases , the poliovirus also infects the upper part of the cervical spinal cord , causing paralysis of the diaphragm . | is there any chance you could do an article on polio replication ? |
poliomyelitis , or polio is an infectious disease caused by the poliovirus , which affects your spinal cord and brainstem . although in the vast majority of cases a poliovirus infection is harmless , if it makes its way into your brain or spinal cord it can cause paralysis , and even death . in the mid 20th-century , p... | these may include bed rest , pain medications , a portable ventilator to assist your breathing , moderate exercise to prevent your muscles from atrophying , and a healthy diet to support your immune system and other body functions . consider the following : post-polio syndrome* : if you have had paralytic or nonparalyt... | does n't '' post-polio syndrome '' seem to resemble alzheimer 's disease ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | a stroll through the etruscan rooms in the vatican museum where the tomb artifacts are now housed presents a mind boggling view of the enormous wealth of the period . found near the woman were objects of various precious materials intended for personal adornment in the afterlife—a gold pectoral , gold bracelets , a go... | a bit tangential , but ... with the fact that etruscans are mostly known through grave goods , and they have grave goods from all over , what are thoughts on the trade and acquisition of art particularly from grave sites ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | yet the labels ‘ mysterious ’ or ‘ enigmatic ’ are often attached to the etruscans since none of their own histories or literature survives . this is particularly ironic as it was the etruscans who were responsible for teaching the romans the alphabet and for spreading literacy throughout the italian peninsula . the in... | and how do we know that it was the etruscans spreading literacy are other cultures refering to it in their records ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | with these other mediterranean cultures , they exchanged goods , ideas and , often , a shared artistic vocabulary . unlike with the greeks , however , the majority of our knowledge about etruscan art comes largely from their burials . ( since most etruscan cities are still inhabited , they hide their etruscan art and a... | are the etruscan burial chamber similar to the egyptian burial chamber , if so what part , objects , or beliefs are similar ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | when did rome overthrow the etruscans ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | though later periods in etruscan history are not characterized by such wealth , the etruscans were , nevertheless , extremely powerful and influential and left a lasting imprint on the city of rome and other parts of italy . essay by dr. laurel taylor additional resources : video : etruscan necropolises of cerveteri an... | hello dr. taylor can you recommend any recent articles or books on the tomb of the augurs ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | we even derive our very common word ‘ person ’ from the etruscan mythological figure ‘ phersu ’ -- the frightful , masked figure you see in this early etruscan tomb painting who would engage his victims in a dreadful ‘ game ’ of blood letting in order to appease the soul of the deceased ( the original gladiatorial game... | i know that we don`t have enough information about the etruscan civilization , but as mentioned in this article they had connection with the mediterranean civilizations , so they influenced by the egyptian about the idea of life after death ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | a bronze bed of course , this important woman might also need her four-wheeled bronze-sheathed carriage in the afterlife as well as an incense burner , jewelry of amber and ivory , and , touchingly , her bronze bed around which thirty-three figurines , all in various gestures of mourning , were arranged . though later... | how influential were the guanacial texts ? |
before the small village of rome became “ rome ” with a capital r ( to paraphrase d.h. lawrence ) , a brilliant civilization once controlled almost the entire peninsula we now call italy . this was the etruscan civilization , a vanished culture whose achievements set the stage not only for the development of ancient ro... | the influence on ancient rome etruscan influence on ancient roman culture was profound and it was from the etruscans that the romans inherited many of their own cultural and artistic traditions , from the spectacle of gladiatorial combat , to hydraulic engineering , temple design , and religious ritual , among many oth... | so the romans got all these ideas of sport and arts from the etruscans ? |
when looking at gentile da fabriano ’ s adoration of the magi , imagine yourself in front of it . not standing in front of the painting in the bright uffizi gallery , but in front of an altar in a dark sacristy , watching flickering candlelight dance on layers of silver , gold and paint that have been molded , etched ,... | at far left , two female attendants curiously ( and somewhat rudely ) inspect the precious gift the elderly king has already presented to the holy family . even the background includes stories-within-stories . look for a lonely traveller being accosted by thieves , or a leopard preparing to pounce from his seat on the ... | are these stories specific stories extracted from the bible ? |
when looking at gentile da fabriano ’ s adoration of the magi , imagine yourself in front of it . not standing in front of the painting in the bright uffizi gallery , but in front of an altar in a dark sacristy , watching flickering candlelight dance on layers of silver , gold and paint that have been molded , etched ,... | just behind the third king , he stands holding a falcon—a reference to his family , since strozzieri was the tuscan word for `` falconer '' ( left ) . other personalized symbols are cleverly included in the painting . the bridle on the white horse to the far right , for example , is decorated with a crescent moon , the... | what was the point of this painting ? |
overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . | what was it 's impact in the long term ? |
overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | why were the northern states immune to the negative effects of the tariff ? |
overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | calhoun authored a pamphlet titled “ south carolina exposition and protest , ” which was published anonymously and put forward the theory of nullification—the declaration of a federal law as null and void within state borders . he argued that since the authority of the federal government derived from the consent of the... | why did the tariffs have no negative impact on the northern states ? |
overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | did he make any good points ? in your view , did the tariff of abominations and the nullification crisis make the civil war inevitable ? can you imagine a compromise solution that would have satisfied both the north and the south , thereby forestalling the outbreak of civil war ? | what role did nullification as the us approached the civil war ? |
overview the tariff of 1828 raised taxes on imported manufactures so as to reduce foreign competition with american manufacturing . southerners , arguing that the tariff enhanced the interests of the northern manufacturing industry at their expense , referred to it as the tariff of abominations . the tariff was so unpo... | in 1828 , during the presidency of john quincy adams , congress passed legislation that included an even higher tariff designed to shelter the burgeoning american manufacturing industry from british competition. $ ^1 $ the tariff became known to its southern opponents as the tariff of abominations . tariffs heightened ... | were the goods that the north manufactured subject to tariffs ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | we have a puzzle on our hands . we opened the switch while current flowed in the inductor . the open switch means there is no place for current to flow . | how long does it take for an inductor current to dissipate around the diode-inductor loop once the switch is opened ( is it an inverse logarithmic rate ) ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | the inductor equation tells us : $ v = \text l\ , \dfrac { di } { dt } $ this says the voltage across an inductor is proportional to the rate of change of the current through the inductor . since the current source provides a constant current , the rate of change , or slope , of the current is $ 0 $ . $ \dfrac { di } {... | is the rate of dissipation correlated to the magnitude of the current ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | the diode provides a path for the inductor to let its current continue to flow , without the need to spark across the switch contacts . the diode 's $ i $ - $ v $ characteristic prevents the voltage from getting much greater than this . $ v_ { \text { pb } } $ goes up to $ 3.7 $ volts or perhaps a little bit higher . | how much does the dissipation rate vary based on the quality of the diode ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | the open switch means there is no place for current to flow . what happens to the inductor current that insists on flowing ? what happens in an ideal circuit ? this is a mess . | does same phenomena also happens with capacitors ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | this tells us the voltage across the inductor is proportional to the change of current through the inductor . for real-world resistors , we learned to take care that voltage and current do n't get too big for the physical resistor to handle . for real-world inductors , we have to be careful the voltage and change of cu... | i do n't quite understand how is it possible for the diode to get forward biased voltage ? |
the inductor is one of the ideal circuit elements . let 's put an inductor 's current-voltage equations to work and learn more about how an inductor behaves . what we 're building to in this article : we explore the derivative form and integral form of the inductor $ i $ - $ v $ equation : $ v = \text l\ , \dfrac { di ... | close the switch when the switch is closed , the current flows down through the inductor and switch , just like it did without the diode : release the switch now we release the push-button switch and it opens . the diode does something clever for us . before , when there was no diode , the opened switch caused $ v_ { \... | so , how does this diode perform protection function ? |
key points the three main categories of market-oriented environmental policies are pollution charges , marketable permits , and better-defined property rights . a marketable permit program is a program in which a city or state government issues permits allowing only a certain quantity of pollution . these permits to po... | in this article , we 'll look at each of these tools in depth . pollution charges a pollution charge is a tax imposed on the quantity of pollution that a firm emits . a pollution charge gives a profit-maximizing firm an incentive to figure out ways to reduce its emissions—as long as the marginal cost of reducing the em... | what happens when a pollution charge is imposed alongside with the issuance of the marketable permit ? |
key points the three main categories of market-oriented environmental policies are pollution charges , marketable permits , and better-defined property rights . a marketable permit program is a program in which a city or state government issues permits allowing only a certain quantity of pollution . these permits to po... | for example , the federal government and many state governments impose taxes on gasoline . we can view this tax as a charge on the air pollution that cars generate as well as a source of funding for maintaining roads . similarly , the refundable charge of five or 10 cents that some states have for returning recyclable ... | what cars are most beneficial to the environment : full electric , hybrids , or fossil fueled cars ? |
explore the biosphere , zoom in on some unique ecosystems and learn how activity in the solar system and plate tectonics can affect the climate and life on the planet . the biosphere the biosphere is the network of all life on earth . many organisms are able to flourish in extreme conditions , but most of the life form... | finding the crater – and confirming the impact date by studying evidence of tsunamis caused by the massive impact – clinched the argument . climate currents the earth 's position in relationship to the sun , its orbital path and its own movement on its axis all contribute to the earth 's climate and to the changing sea... | the carbon dioxide then causes the temperature of the climate to rise ? |
dismantling spatial illusion since manet ( and degas , monet , and cezanne ) , artists have sought to undermine the illusion of space that had ruled painting since about 1425 . spatial illusion was increasingly seen as a defect that reduced the integrity of painting . but as the earlier painters of the avant-garde have... | matisse is literally dismantling the perspective of the room but it makes no difference , we still see the room as an inhabitable space . illusion still triumphs . figure-ground relationship although it is very difficult to see in reproduction , if seen in person at moma , it is clear that the whitish lines that define... | why is illusion such a big part of art ? |
dismantling spatial illusion since manet ( and degas , monet , and cezanne ) , artists have sought to undermine the illusion of space that had ruled painting since about 1425 . spatial illusion was increasingly seen as a defect that reduced the integrity of painting . but as the earlier painters of the avant-garde have... | at the same time , the ground which supports those figures , is constructed out of a plane of red that is physically above the canvas . what matisse has done then is reverse the figure ground relationship . he has made the figure out of the ground ( the canvas ) and made the ground out of the figure ( the red paint on ... | how can the `` canvas '' be defined as the `` figure '' ? |
dismantling spatial illusion since manet ( and degas , monet , and cezanne ) , artists have sought to undermine the illusion of space that had ruled painting since about 1425 . spatial illusion was increasingly seen as a defect that reduced the integrity of painting . but as the earlier painters of the avant-garde have... | he meets this challenge–the destruction of spatial illusion , in three stages . the color red red is often thought of as the most aggressive color . it has the most punch , and that ’ s what matisse needed here . | why is red used so much as an illusion color ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . | what happens when there are not enough white blood cells ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | the pocket then pinches off with the help of specialized proteins , leaving the particle trapped in in a newly created vesicle or vacuole inside the cell . endocytosis can be further subdivided into the following categories : phagocytosis , pinocytosis , and receptor-mediated endocytosis . phagocytosis phagocytosis ( l... | what is a real life example of endocytosis ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | pinocytosed material is held in small vesicles , much smaller than the large food vacuole produced by phagocytosis . receptor-mediated endocytosis receptor-mediated endocytosis is a form of endocytosis in which receptor proteins on the cell surface are used to capture a specific target molecule . the receptors , which ... | does that mean that individual amino acids can enter a cell through receptor-mediated endocytosis ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | pinocytosed material is held in small vesicles , much smaller than the large food vacuole produced by phagocytosis . receptor-mediated endocytosis receptor-mediated endocytosis is a form of endocytosis in which receptor proteins on the cell surface are used to capture a specific target molecule . the receptors , which ... | are all the vesicles used in all bulk transport all coated in clathrin ( or clathrin coated ) or is it only in receptor-mediated endocytosis ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | pinocytosis occurs in many cell types and takes place continuously , with the cell sampling and re-sampling the surrounding fluid to get whatever nutrients and other molecules happen to be present . pinocytosed material is held in small vesicles , much smaller than the large food vacuole produced by phagocytosis . rece... | what is the difference between granules and vesicles ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | these mechanisms allow cells to obtain nutrients from the environment , selectively “ grab ” certain particles out of the extracellular fluid , or release signaling molecules to communicate with neighbors . like the active transport processes that move ions and small molecules via carrier proteins , bulk transport is a... | bulk transport is said to use energy ( atp ) , in which part of the process it uses the atp ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | suppose a certain type of molecule were removed from the blood by receptor-mediated endocytosis . what would happen if the receptor protein for that molecule were missing or defective ? exocytosis cells must take in certain molecules , such as nutrients , but they also need to release other molecules , such as signalin... | what is a transmembrane protein ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | the pocket then pinches off with the help of specialized proteins , leaving the particle trapped in in a newly created vesicle or vacuole inside the cell . endocytosis can be further subdivided into the following categories : phagocytosis , pinocytosis , and receptor-mediated endocytosis . phagocytosis phagocytosis ( l... | what 's the importance of having rme if you have phagocytosis ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | these mechanisms allow cells to obtain nutrients from the environment , selectively “ grab ” certain particles out of the extracellular fluid , or release signaling molecules to communicate with neighbors . like the active transport processes that move ions and small molecules via carrier proteins , bulk transport is a... | why does this type of transport require energy ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | exocytosis cells must take in certain molecules , such as nutrients , but they also need to release other molecules , such as signaling proteins and waste products , to the outside environment . exocytosis ( exo = external , cytosis = transport mechanism ) is a form of bulk transport in which materials are transported ... | could the pocket that pinches off in bulk transport be called a vesicles or a vacuole in the cell ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | lysosomes have enzymes that break the engulfed particle down into its basic components ( such as amino acids and sugars ) , which can then be used by the cell . pinocytosis pinocytosis ( literally , “ cell drinking ” ) is a form of endocytosis in which a cell takes in small amounts of extracellular fluid . pinocytosis ... | or is it the same type of fluid that is found inside a cell already ? |
introduction imagine you are a macrophage : a merciless white blood cell that stalks , amoeba-like , through the tissues of the body , looking for pathogens , dead and dying cells , and other undesirables . when you encounter one of these , your task is not just to destroy it , but to devour it whole . ( chomp ! ) this... | pinocytosed material is held in small vesicles , much smaller than the large food vacuole produced by phagocytosis . receptor-mediated endocytosis receptor-mediated endocytosis is a form of endocytosis in which receptor proteins on the cell surface are used to capture a specific target molecule . the receptors , which ... | in the picture of receptor-mediated endocytosis , what is the calthrin and why is it on the inside of the membrane ? |
evolving american narratives at 555 feet high the washington monument towers over the national mall . in a city of height-restricted buildings , this enormous , mottled-marble obelisk can be seen piercing the sky from miles around like a beacon to the country ’ s symbolic center . once there , the observation deck at t... | and a person can learn a lot about world war ii by visiting that memorial and studying the reliefs , inscriptions , sculptures and other symbolic features . but one can not learn anything about the way washington looked or his words or deeds by visiting the washington monument . and that is a result of the long and con... | why are there height restrictions on washington dc buildings ? |
evolving american narratives at 555 feet high the washington monument towers over the national mall . in a city of height-restricted buildings , this enormous , mottled-marble obelisk can be seen piercing the sky from miles around like a beacon to the country ’ s symbolic center . once there , the observation deck at t... | and that is a result of the long and contentious process from which the monument to america ’ s first president arose . the washington monument receives an estimated 4 million visitors a year . it was the tallest building in the world until the completion of the eiffel tower in 1889 , and remains the tallest stone buil... | does the washington monument utilize any sort of protective device or mechanism that would protect it from vibrations from earthquake or other natural or man-caused disasters ? |
evolving american narratives at 555 feet high the washington monument towers over the national mall . in a city of height-restricted buildings , this enormous , mottled-marble obelisk can be seen piercing the sky from miles around like a beacon to the country ’ s symbolic center . once there , the observation deck at t... | and a person can learn a lot about world war ii by visiting that memorial and studying the reliefs , inscriptions , sculptures and other symbolic features . but one can not learn anything about the way washington looked or his words or deeds by visiting the washington monument . and that is a result of the long and con... | i know we have learned in other modules of statues in museums being placed on `` vibration absorbing '' stands in order to protect from this sort of thing and i imagine that given the washington monument is all stone that it would be particularly vulnerable to sever vibrations of one king or another ? |
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