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the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | it is much more perilous to assert meaning for the art of people who shared our anatomy but had not yet developed the cultures or linguistic structures that shaped who we have become . do the tools of art history even apply ? here is evidence of a visual language that collapses the more than 1,000 generations that sepa... | if the history of man has changed over the hundreds of thousands of years , why do we still act like animals ( instinct wise ) ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . | why are humans just the ones who can build planes ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . | what happened to the other species of humans , such as the homo erectus and other species , that did n't happen to us ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . | why do things then that no longer live sill have a effect ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | archeologists that study paleolithic era humans , believe that the paintings discovered in 1994 , in the cave at chauvet-pont-d'arc in the ardéche valley in france , are more than 30,000 years old . the images found at lascaux and altamira are more recent , dating to approximately 15,000 b.c.e . the paintings at pech m... | where the makers of these images considered to be nomadic peoples ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | the desire to speculate based on what we see and the physical evidence of the caves is wildly seductive . chauvet-pont-d'arc the cave at chauvet-pont-d'arc is over 1,000 feet in length with two large chambers . carbon samples date the charcoal used to depict the two head-to-head rhinoceroses ( see the image above , bot... | how old is the chauvet-pont-d'arc ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | it dates to 35,000 b.c.e . the caves the caves at chauvet-pont-d'arc , lascaux , pech merle , and altamira contain the best known examples of pre-historic painting and drawing . here are remarkably evocative renderings of animals and some humans that employ a complex mix of naturalism and abstraction . | were the caves used as actual living spaces or were they more temple-like , visited only occasionally ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | questions what can we really know about the creators of these paintings and what the images originally meant ? these are questions that are difficult enough when we study art made only 500 years ago . it is much more perilous to assert meaning for the art of people who shared our anatomy but had not yet developed the c... | would you be able to tell the difference in time if one drawing was done 100 years ago , and then 50 years ago someone used the same peice of charcoal to draw a replica of the first drawing ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | it has been interpreted as depicting the thighs and genitals of a woman but there is also a drawing of a bison and a lion and the images are nearly intertwined . in addition to the drawings , the cave is littered with the skulls and bones of cave bear and the track of a wolf . there is also a foot print thought to have... | what is the significance of the bear bones , and did they date the child 's foot print from the same period ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | we see a group of horses , rhinos and bison and we see them as a group , overlapping and skewed in scale . but the photograph distorts the way these animal figures would have been originally seen . the bright electric lights used by the photographer create a broad flat scope of vision ; how different to see each animal... | could the style in which these drawings are created be considered an artistic style the same way things like cubism and fauvism ( etc ) are ? |
the oldest art : ornamentation humans make art . we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco t... | we do this for many reasons and with whatever technologies are available to us . extremely old , non-representational ornamentation has been found across africa . the oldest firmly-dated example is a collection of 82,000 year old nassarius snail shells found in morocco that are pierced and covered with red ochre . | if i took a really old painting and put fresh paint over it would it still be a really old painting ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | these massive monuments were unsurpassed in height for thousands of years after their construction and continue to amaze and enthrall us with their overwhelming mass and seemingly impossible perfection . their exacting orientation and mind-boggling construction has elicited many theories about their origins , including... | does anyone really believe that the building of the pyramids `` had extra-terrestrial impetus '' ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | each pyramid was part of a royal mortuary complex that also included a temple at its base and a long stone causeway ( some nearly 1 kilometer in length ) leading east from the plateau to a valley temple on the edge of the floodplain . other ( smaller ) pyramids , and small tombs in addition to these major structures , ... | what does it mean by `` rock cut tombs '' ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | i wonder how many years it toke to make a piramaid ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | however , by examining the several hundred years prior to their emergence on the giza plateau , it becomes clear that these incredible structures were the result of many experiments , some more successful than others , and represent an apogee in the development of the royal mortuary complex . three pyramids , three rul... | why do queen , s pyramids have to be built differently ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | construction many questions remain about the construction of these massive monuments , and theories abound as to the actual methods used . the workforce needed to build these structures is also still much discussed . discovery of a town for workers to the south of the plateau has offered some answers . | if it took about 10 years to build a pyramid would n't that be kind of morbid , for the pharaoh ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | these crews were divided into gangs of 200 men , with each group further divided into teams of 20 . experiments indicate that these groups of 20 men could haul the 2.5 ton blocks from quarry to pyramid in about 20 minutes , their path eased by a lubricated surface of wet silt . an estimated 340 stones could be moved da... | how many blocks are in the pyramid ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | however , by examining the several hundred years prior to their emergence on the giza plateau , it becomes clear that these incredible structures were the result of many experiments , some more successful than others , and represent an apogee in the development of the royal mortuary complex . three pyramids , three rul... | when were the pyramids of giza built , approximately ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | the pyramid was considered a place of regeneration for the deceased ruler . construction many questions remain about the construction of these massive monuments , and theories abound as to the actual methods used . the workforce needed to build these structures is also still much discussed . | what kind of stone was used ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | the pyramid was also clearly connected to the sacred ben-ben stone , an icon of the primeval mound that was considered the place of initial creation . the pyramid was considered a place of regeneration for the deceased ruler . construction many questions remain about the construction of these massive monuments , and th... | how come there is n't a single smooth part of the pyramid left ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | these crews were divided into gangs of 200 men , with each group further divided into teams of 20 . experiments indicate that these groups of 20 men could haul the 2.5 ton blocks from quarry to pyramid in about 20 minutes , their path eased by a lubricated surface of wet silt . an estimated 340 stones could be moved da... | did all the triangular blocks fall out or erode ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | however , by examining the several hundred years prior to their emergence on the giza plateau , it becomes clear that these incredible structures were the result of many experiments , some more successful than others , and represent an apogee in the development of the royal mortuary complex . three pyramids , three rul... | were menkaure , khafre and khufu such special pharaohs that the egyptians built pyramids for them ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | however , by examining the several hundred years prior to their emergence on the giza plateau , it becomes clear that these incredible structures were the result of many experiments , some more successful than others , and represent an apogee in the development of the royal mortuary complex . three pyramids , three rul... | why pyramids for only these three pharaohs ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | discovery of a town for workers to the south of the plateau has offered some answers . it is likely that there was a permanent group of skilled craftsmen and builders who were supplemented by seasonal crews of approximately 2,000 conscripted peasants . these crews were divided into gangs of 200 men , with each group fu... | why is the builders ' quarters so big ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | however , by examining the several hundred years prior to their emergence on the giza plateau , it becomes clear that these incredible structures were the result of many experiments , some more successful than others , and represent an apogee in the development of the royal mortuary complex . three pyramids , three rul... | did n't carbon dating reveal that the pyramids were actually built from top to bottom ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | experiments indicate that these groups of 20 men could haul the 2.5 ton blocks from quarry to pyramid in about 20 minutes , their path eased by a lubricated surface of wet silt . an estimated 340 stones could be moved daily from quarry to construction site , particularly when one considers that many of the blocks ( suc... | ( the top stones were older by 1000 years than the lower stones ) if so , how was this possible ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | each pyramid was part of a royal mortuary complex that also included a temple at its base and a long stone causeway ( some nearly 1 kilometer in length ) leading east from the plateau to a valley temple on the edge of the floodplain . other ( smaller ) pyramids , and small tombs in addition to these major structures , ... | what was found inside the pyramids when they were explored ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | these crews were divided into gangs of 200 men , with each group further divided into teams of 20 . experiments indicate that these groups of 20 men could haul the 2.5 ton blocks from quarry to pyramid in about 20 minutes , their path eased by a lubricated surface of wet silt . an estimated 340 stones could be moved da... | secondly , if you could please , confirm for me that the tangent slope angles for the meidum and khufu structures are the same : both then have a height in ratio to a circle the circumference of which is equal to the perimeter of the pyramid 's base ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | each pyramid was part of a royal mortuary complex that also included a temple at its base and a long stone causeway ( some nearly 1 kilometer in length ) leading east from the plateau to a valley temple on the edge of the floodplain . other ( smaller ) pyramids , and small tombs in addition to these major structures , ... | could the pyramids be a power generator for the area ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | on the map , what are boat pits ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | egyptian scientist ( mostafa mahmoud ) suggested that the ancient egyptians built a zone of zero gravity ( just like we did today ) , what do you think about that guyz ? |
one of the seven wonders of the ancient world the last remaining of the seven wonders of the ancient world , the great pyramids of giza are perhaps the most famous and discussed structures in history . these massive monuments were unsurpassed in height for thousands of years after their construction and continue to ama... | these crews were divided into gangs of 200 men , with each group further divided into teams of 20 . experiments indicate that these groups of 20 men could haul the 2.5 ton blocks from quarry to pyramid in about 20 minutes , their path eased by a lubricated surface of wet silt . an estimated 340 stones could be moved da... | it says that 20 men could haul 2.5 tons from the quarry to pyramid in 20 minutes with a lubricated path ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | for a single body such as the tennis ball of mass $ m $ ( shown in figure 1 ) , rotating at radius $ r $ from the axis of rotation the rotational inertia is $ i = mr^2 $ and consequently rotational inertia has si units of $ \mathrm { kg\cdot m^2 } $ . rotational inertia is also commonly known as moment of inertia . it ... | how do you derive the moment of inertia , using calculus ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . | i do not understand how rotational inertia increases with increasing distance of mass ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | for a single body such as the tennis ball of mass $ m $ ( shown in figure 1 ) , rotating at radius $ r $ from the axis of rotation the rotational inertia is $ i = mr^2 $ and consequently rotational inertia has si units of $ \mathrm { kg\cdot m^2 } $ . rotational inertia is also commonly known as moment of inertia . it ... | what 's the idea behind moment of inertia ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | exercise 1a : a motor capable of producing a constant torque of $ 100~\mathrm { nm } $ and a maximum rotation speed of $ 150~\mathrm { rad/s } $ is connected to a flywheel with rotational inertia $ 0.1~\mathrm { kg m^2 } $ . what angular acceleration will the flywheel experience as the motor is switched on ? exercise 1... | how does frictional torque affect the angular acceleration ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | exercise 1a : a motor capable of producing a constant torque of $ 100~\mathrm { nm } $ and a maximum rotation speed of $ 150~\mathrm { rad/s } $ is connected to a flywheel with rotational inertia $ 0.1~\mathrm { kg m^2 } $ . what angular acceleration will the flywheel experience as the motor is switched on ? exercise 1... | like if a frictional torque is applied , where does that go in the equation to find angular acceleration of a rod/disk ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . | does the rotational inertia of a particular object differ for different axes of rotation ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . | can one object have more than one rotational inertia ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | it is possible to calculate the total rotational inertia for any shape about any axis by summing the rotational inertia of each mass . $ \begin { align } i & amp ; = m_1 r_1^2 + m_2 r_2^2 + \ldots \ & amp ; = \sigma m_i r_i^2 \end { align } $ exercise 2a : consider the object shown in figure 3 ( a ) . what is its rotat... | in exercise 3 , why is distance d equal ( 1+0.75 ) /2 ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | these typically give the moment of inertia for a shape rotated about its centroid ( which often corresponds with the shapes center of mass ) . for example , the rotational inertia of a solid cylinder with radius $ r $ rotated about a central axis is $ i = \frac { 1 } { 2 } m r^2 $ and for a hollow cylinder with inner a... | why is n't d equal ( 1-0.75 ) /2 ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | however , for many common geometric shapes it is possible to find tables of equations for the rotational inertia in textbooks or other sources . these typically give the moment of inertia for a shape rotated about its centroid ( which often corresponds with the shapes center of mass ) . for example , the rotational ine... | why is the moment of inertia of a ring rotated along its center is smaller than a ring rotated along its diameter ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . | how do we derive the rotational inertia of complex objects ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | if rotated about a central axis ( out of the page ) , what is the rotational inertia of the object ? where else does rotational inertia come up in physics ? rotational inertia is important in almost all physics problems that involve mass in rotational motion . | i am confused whether 'g ' term will come in the inertia equation as i=0.5m ( r2+r2 ) /g or not ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | often mechanical systems are made of many masses connected together , or complex shapes . it is possible to calculate the total rotational inertia for any shape about any axis by summing the rotational inertia of each mass . $ \begin { align } i & amp ; = m_1 r_1^2 + m_2 r_2^2 + \ldots \ & amp ; = \sigma m_i r_i^2 \end... | from the figure 3 , how can we calculate rotational inertia in z axis ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | these typically give the moment of inertia for a shape rotated about its centroid ( which often corresponds with the shapes center of mass ) . for example , the rotational inertia of a solid cylinder with radius $ r $ rotated about a central axis is $ i = \frac { 1 } { 2 } m r^2 $ and for a hollow cylinder with inner a... | in exercise 3 , is that the rotational inertia for the big disc mr^2 rather than ( mr^2 ) /2 , since it 's a hollow cylinder ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . | if rotational inertia increases , does rotational velocity increase or decrease ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | rotational inertia plays a similar role in rotational mechanics to mass in linear mechanics . indeed , the rotational inertia of an object depends on its mass . it also depends on the distribution of that mass relative to the axis of rotation . | how does this explain a fulcrum when the further the object is from the center , the less force needed to apply to cause an object to move ? |
what is rotational inertia ? rotational inertia is a property of any object which can be rotated . it is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis . rotational inertia plays a similar role in rotational mechanics to mass in linear me... | what is rotational inertia ? rotational inertia is a property of any object which can be rotated . | what are the units for rotational inertia ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | let 's take a closer look at this by walking through several examples . multiplying a real number by a complex number example multiply $ -4 ( 13+5i ) $ . write the resulting number in the form of $ a+bi $ . | would 0+0i still be a complex number ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | $ \begin { align } \teald { 2i } ( 3-8i ) & amp ; =\teald { 2i } ( 3 ) -\teald { 2i } ( 8i ) \ \ & amp ; =6i-16i^2 \end { align } $ at this point , the answer is not of the form $ a+bi $ since it contains $ i^2 $ . however , we know that $ \goldd { i^2=-1 } $ . let 's substitute and see where that gets us . | what about questions like the square root of -75 times the square root of -2 ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | $ \begin { align } \phantom { \teald { 2i } ( 3-8i ) } & amp ; =6i-16\goldd { i^2 } \ \ & amp ; =6i-16 ( \goldd { -1 } ) \ \ & amp ; =6i+16\ \end { align } $ using the commutative property , we can write the answer as $ 16+6i $ , and so we have that $ 2i ( 3-8i ) =16+6i $ . check your understanding problem 1 problem 2 ... | in challenge problem 2 , is n't ( 1 + 3i ) ^2 equal to ( 1 + 9i^2 ) = ( 1 + 9* ( -1 ) ) = ( 1 - 9 ) = -8 ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | why is n't dividing complex and imaginary numbers here ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | $ \begin { align } \phantom { \teald { 2i } ( 3-8i ) } & amp ; =6i-16\goldd { i^2 } \ \ & amp ; =6i-16 ( \goldd { -1 } ) \ \ & amp ; =6i+16\ \end { align } $ using the commutative property , we can write the answer as $ 16+6i $ , and so we have that $ 2i ( 3-8i ) =16+6i $ . check your understanding problem 1 problem 2 ... | in the last problem , how would i know whether to write 3i^2 or 3^2 i^2 ? |
a complex number is any number that can be written as $ \greend { a } +\blued { b } i $ , where $ i $ is the imaginary unit and $ \greend { a } $ and $ \blued { b } $ are real numbers . when multiplying complex numbers , it 's useful to remember that the properties we use when performing arithmetic with real numbers wo... | let 's substitute and see where that gets us . $ \begin { align } \phantom { \teald { 2i } ( 3-8i ) } & amp ; =6i-16\goldd { i^2 } \ \ & amp ; =6i-16 ( \goldd { -1 } ) \ \ & amp ; =6i+16\ \end { align } $ using the commutative property , we can write the answer as $ 16+6i $ , and so we have that $ 2i ( 3-8i ) =16+6i $ ... | how to find a & b when z=a+bi and z^2=8+6i ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | although benin had no gold to offer , they supplied the portuguese with pepper , ivory , leopard skins and people , who were taken as slaves to work elsewhere in africa and in the portuguese colonies in brazil . many of these people were captives taken in the wars in which the benin people conquered their neighbors far... | what were the people of the kingdom of benin called ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | the plaques when the son of the deposed king revived the benin monarchy in 1914 , now under british rule , he did his best to restore the palace and continue the ancient traditions of the benin monarchy . because these traditions are followed in the modern city of benin , it is still possible to recognize many of the s... | is benin a separate country and a city in nigeria ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | quickly , however , research showed that the benin bronzes were entirely west african creations without european influence , and they transformed european understanding of african history . the plaques when the son of the deposed king revived the benin monarchy in 1914 , now under british rule , he did his best to rest... | what happened to the monarchy of benin ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | many of these people were captives taken in the wars in which the benin people conquered their neighbors far and wide and made them part of the kingdom , or they were sent by the conquered local chiefs as tribute to the king . © trustees of the british museum | why has the artifacts have to be in a different museum besides nigeria 's ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | scholars struggled to understand how african craftsmen could have made such works of art , putting forward some wild theories to explain them . quickly , however , research showed that the benin bronzes were entirely west african creations without european influence , and they transformed european understanding of afri... | how did these peoples record their history ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | why is britain involved in about every country in africa ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | the plaques when the son of the deposed king revived the benin monarchy in 1914 , now under british rule , he did his best to restore the palace and continue the ancient traditions of the benin monarchy . because these traditions are followed in the modern city of benin , it is still possible to recognize many of the s... | is benin close to togo ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | the plaques when the son of the deposed king revived the benin monarchy in 1914 , now under british rule , he did his best to restore the palace and continue the ancient traditions of the benin monarchy . because these traditions are followed in the modern city of benin , it is still possible to recognize many of the s... | what happened to the region of the benin city after the british intervention ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . | did the britiish rule in nigeria ? |
until the late 19th century , one of the major powers in west africa was the kingdom of benin in what is now southwest nigeria . when european merchant ships began to visit west africa from the 15th century onwards , benin came to control the trade between the inland peoples and the europeans on the coast . the kingdom... | quickly , however , research showed that the benin bronzes were entirely west african creations without european influence , and they transformed european understanding of african history . the plaques when the son of the deposed king revived the benin monarchy in 1914 , now under british rule , he did his best to rest... | is benin 's government still run by a monarchy ? |
italian trader at the court of kublai khan at the height of the mongol empire , marco polo served emperor kublai khan in china and returned to venice to write an account of his experiences that would give europeans some of their earliest information about china . background in the 13th century , people who lived in ven... | few texts have provoked more controversy than the travels of marco polo . the authorship is not clear — is it polo or rusticello ? sometimes the text is in the first-person voice , sometimes in the third-person . how much of the text is based on polo ’ s firsthand experience and how much did the author ( s ) insert sec... | could it be mijiu , a clear rice wine from china which is also drank warm , like japanese sake is drank warm sometimes ? |
italian trader at the court of kublai khan at the height of the mongol empire , marco polo served emperor kublai khan in china and returned to venice to write an account of his experiences that would give europeans some of their earliest information about china . background in the 13th century , people who lived in ven... | he died there at almost 70 years of age , on january 8 , 1324 , and was buried under the church of san lorenzo , though his tomb has now vanished . marco polo ’ s book polo might have been forgotten had his book , the travels of marco polo , not engaged widespread interest . it could be circulated only one copy at a ti... | was it marco polo who gave to chinese ceramics name `` porcelain '' , said to derive from italian `` porcellana '' or cowrie shell , please ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | feedback inhibition . key metabolic enzymes are often inhibited by the end product of the pathway they control ( feedback inhibition ) . in the rest of this article , we 'll examine these factors one at a time , seeing how each can affect enzyme activity . | why is it that only the end product blocks the earliest step of the pathway and not the intermediate products of the metabolic pathway ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | if too much atp were made , much of it might go to waste , spontaneously breaking back down into its components ( adp and p $ _i $ ) . adp , on the other hand , serves as a positive allosteric regulator ( an allosteric activator ) for some of the same enzymes that are inhibited by atp . for instance , adp may act by bi... | what is an allosteric activator ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | the basics of enzyme kinetics graphs article has a step-by-step walkthrough . allosteric regulation allosteric regulation , broadly speaking , is just any form of regulation where the regulatory molecule ( an activator or inhibitor ) binds to an enzyme someplace other than the active site . the place where the regulato... | whats the difference between non competitive inhibition and allosteric regulation ( involving inhibitor ) ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | this inhibition is said to be `` noncompetitive '' because the inhibitor and substrate can both be bound at the same time . competitive and non-competitive inhibitors can be told apart by how they affect an enzyme 's activity at different substrate concentrations . if an inhibitor is competitive , it will decrease reac... | does the non competitive inhibitors actually change the shape of the active site ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | these include ph and temperature ( discussed in the active site article ) , as well as : regulatory molecules . enzyme activity may be turned `` up '' or `` down '' by activator and inhibitor molecules that bind specifically to the enzyme . cofactors . | what does it mean to `` stabilize '' the enzyme ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | these include ph and temperature ( discussed in the active site article ) , as well as : regulatory molecules . enzyme activity may be turned `` up '' or `` down '' by activator and inhibitor molecules that bind specifically to the enzyme . cofactors . | the competitive inhibator has a limit of time in the enzyme or make the enzyme useless ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | competitive and non-competitive inhibitors can be told apart by how they affect an enzyme 's activity at different substrate concentrations . if an inhibitor is competitive , it will decrease reaction rate when there 's not much substrate , but can be `` out-competed '' by lots of substrate . that is , the enzyme can s... | is the substrate here the inhibitor/activator ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | however , some enzymes that are allosterically regulated have a set of unique properties that set them apart . these enzymes , which include some of our key metabolic regulators , are often given the name of allosteric enzymes $ ^2 $ . allosteric enzymes typically have multiple active sites located on different protein... | what is 'immobilising enzymes ' ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | in this article , we ’ ll take a look at factors that can affect or control enzyme activity . these include ph and temperature ( discussed in the active site article ) , as well as : regulatory molecules . enzyme activity may be turned `` up '' or `` down '' by activator and inhibitor molecules that bind specifically t... | and why some says that the 'immobilising enzymes ' are more tolerant to temperature and ph and does not denature easily ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | the basics of enzyme kinetics graphs article has a step-by-step walkthrough . allosteric regulation allosteric regulation , broadly speaking , is just any form of regulation where the regulatory molecule ( an activator or inhibitor ) binds to an enzyme someplace other than the active site . the place where the regulato... | what is a good example of allosteric regulation ( it can be inhibition or activation ) , its pathway and the name of the enzyme involved ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | an inhibitor may bind to an enzyme and block binding of the substrate , for example , by attaching to the active site . this is called competitive inhibition , because the inhibitor “ competes ” with the substrate for the enzyme . that is , only the inhibitor or the substrate can be bound at a given moment . | can a non competitive inhibitor also be an irreversible inhibitor ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | what is a kinase about , what it is ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | some vitamins are precursors to coenzymes and others act directly as coenzymes . for example , vitamin c is a coenzyme for several enzymes that take part in building the protein collagen , a key part of connective tissue . enzyme compartmentalization enzymes are often compartmentalized ( stored in a specific part of th... | why does vitamin c look like a monosaccharide ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | these enzymes , which include some of our key metabolic regulators , are often given the name of allosteric enzymes $ ^2 $ . allosteric enzymes typically have multiple active sites located on different protein subunits . when an allosteric inhibitor binds to an enzyme , all active sites on the protein subunits are chan... | so , is it that , in the case of inhibition , conformational change happens only to allosteric enzymes ( because they have multiple subunits , each undergoing a conformational change at the active site ) ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | these include ph and temperature ( discussed in the active site article ) , as well as : regulatory molecules . enzyme activity may be turned `` up '' or `` down '' by activator and inhibitor molecules that bind specifically to the enzyme . cofactors . | what do an activator do to boost the activity of an enzyme ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | in that case , almost all the active sites of almost all the enzyme molecules will be occupied by the substrate rather than the inhibitor . if an inhibitor is noncompetitive , the enzyme-catalyzed reaction will never reach its normal maximum rate even with a lot of substrate . this is because the enzyme molecules with ... | what is an example of a noncompetitive inhibitor ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | storing enzymes in specific compartments can keep them from doing damage or provide the right conditions for activity . feedback inhibition . key metabolic enzymes are often inhibited by the end product of the pathway they control ( feedback inhibition ) . | does this mean that there is allosteric competitive inhibition and allosteric non-competitive inhibition ? |
introduction the cells of your body are capable of making many different enzymes , and at first you might think : great , let ’ s crank all of those enzymes up and metabolize as fast as possible ! as it turns out , though , you really don ’ t want to produce and activate all of those enzymes at the same time , or in th... | these include ph and temperature ( discussed in the active site article ) , as well as : regulatory molecules . enzyme activity may be turned `` up '' or `` down '' by activator and inhibitor molecules that bind specifically to the enzyme . cofactors . | in the second to last paragraph , does atp bind to activate an enzyme , or adp ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | second law of thermodynamics this law states “ the total change in entropy of a system plus its surroundings will always increase for a spontaneous process ” entropy is defined as the “ measure of disorder or randomness of a system ” . every system wants to achieve a state of maximum disorder or randomness . a commonly... | disorder is the molecular movement of particles in general ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | scenario 2 : 10 j of heat is released ( to the surroundings ) by hot coffee , so surroundings gain 10 j and system ( coffee ) loses 10 j . thus , q $ { system } $ = - 10 j and q $ { surroundings } $ = +10 j ∆s $ { universe } $ = ∆s $ { system } $ + ∆s $ _ { surroundings } $ = q $ { system } $ / t $ { system } $ + q $ {... | and when heat leaves the surroundings into the system , should n't q be negative ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | gibb ’ s free energy ( g ) : predictor of spontaneity of a chemical reaction gibb ’ s free energy is defined as ‘ the energy associated with a chemical reaction that can be used to do work. ’ the free energy ( g ) of a system is the sum of its enthalpy ( h ) minus the product of the temperature ( t ) and the entropy ( ... | does n't spontaneity depend on enthalpy too ( not just entropy ) based on the equation for gibb 's free energy ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | just by looking at a chemical reaction , we can not predict if it will take place spontaneously or not . so , calculating the entropy change for that particular reaction becomes important . gibb ’ s free energy ( g ) : predictor of spontaneity of a chemical reaction gibb ’ s free energy is defined as ‘ the energy assoc... | is n't it correct to say that if the change in entropy is negative , a reaction can still be spontaneous if temperature is low enough and the change in enthalpy is positive ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | analogous to the penguins , at a temperature of zero kelvin the atoms in a pure crystalline substance get aligned perfectly and do not move around . matter is in a state of maximum order ( least entropy ) when the temperature approaches absolute zero ( 0 kelvin ) . in other words , the entropy of a perfect crystal appr... | if entropy is joule/kelvin and absolute zero is 0 kelvin , then why entropy at this temperature is 0 ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | problem 1 : in an exothermic process , the volume of a gas expanded from 186 ml to 1997 ml against a constant pressure of 745 torr . during the process , 18.6 calories of heat energy were given off . what was the internal energy change for the system in joules ? | any given energy/0 should n't be rather infinity or undefined ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | that is ; if t $ _1 $ = t $ _3 $ and t $ _2 $ = t $ _3 $ , then t $ _1 $ = t $ _2 $ the zeroth law is analogous to the basic rule in algebra , if a=c and b=c , then a=b . this law points to a very important fact - ‘ temperature affects the direction of heat flow between systems. ’ heat always flows from high temperatur... | can someone explain what is the maximum value of heat capacity ratio ( kappa ) ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | what was the internal energy change for the system in joules ? also , ( 1 l atm = 101.3 j ) q = heat given off by system = 18.6 cal = 18.6 x 4.184 j ( remember : 1 cal = 4.184 j ) = 77.82 j since heat flows out of the system , q will be negative . so q = -77.82 j work ( w ) = p∆v , where p = constant pressure of gas , ... | i have seen that most of ideal gases have a ratio ranging from 1 to 1.67 , so i was wondering if that value can be higher than those in thermodynamics tables ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | first law of thermodynamics this law is essentially the ‘ law of conservation of energy ’ . energy can neither be created nor destroyed ; it can just be converted from one form to another . in simple words , the first law of thermodynamics states that whenever heat energy is added to a system from outside , some of tha... | at room temperature , if i touch a ball made of iron with one hand & a wooden ball from another hand why the iron ball feels colder than the wooden one ? |
law of thermodynamics thermodynamics is a very important branch of both physics and chemistry . it deals with the study of energy , the conversion of energy between different forms and the ability of energy to do work . as you go through this article , i am pretty sure that you will begin to appreciate the importance o... | that is ; if t $ _1 $ = t $ _3 $ and t $ _2 $ = t $ _3 $ , then t $ _1 $ = t $ _2 $ the zeroth law is analogous to the basic rule in algebra , if a=c and b=c , then a=b . this law points to a very important fact - ‘ temperature affects the direction of heat flow between systems. ’ heat always flows from high temperatur... | is entropy related to temperature ? |
key points communication is when one animal transmits information to another animal causing some kind of change in the animal that gets the information . communication is usually between animals of a single species , but it can also happen between two animals of different species . animals communicate using signals , w... | still , these signals are an important part of the communication repertoire of many species . tactile signals are fairly common in insects . for instance , a honeybee forager that 's found a food source will perform an intricate series of motions called a waggle dance to indicate the location of the food . | do all animals have common type of signals in them ? |
background formal definition of divergence in two-dimensions flux in three-dimensions it is a short step between these two prerequisites , and understanding the formal definition of divergence in three dimensions . for that reason , i 'm going to keep this article relatively short , assuming that you have the intuition... | $ \displaystyle \text { div } \ , \bluee { \textbf { f } } \golde { ( x , y , z ) } = ! ! ! ! ! ! ! ! ! ! \underbrace { \lim_ { \rede { r } \to \golde { ( x , y , z ) } } } { \rede { r } \text { shrinks around } \golde { ( x , y , z ) } } ! ! ! ! \dfrac { 1 } { |\rede { r } | } \iint\rede { s } \bluee { \textbf { f } }... | is r ( x , y , z ) supposed to indicate surface area or volume ? |
antibiotics are a type of medicine which are used to treat bacterial infections . everyday we come into contact with thousands of bacterial cells . we are colonized with lots of different types of bacteria which live on us , and inside of us ; everywhere from the grooves of your fingerprint , to the nooks and crannies ... | antibiotic development over the years , a number of antibiotics have been discovered in nature or synthesized in the lab . some antibiotics target only specific bacteria and are called “ narrow spectrum ” antibiotics , whereas other antibiotics target many types of bacteria and are called “ broad spectrum ” antibiotics... | what happens if bacteria evolves beyond what antibiotics can treat ? |
antibiotics are a type of medicine which are used to treat bacterial infections . everyday we come into contact with thousands of bacterial cells . we are colonized with lots of different types of bacteria which live on us , and inside of us ; everywhere from the grooves of your fingerprint , to the nooks and crannies ... | if enough of the antibiotic is present , the bacterial cell is crippled and either stops growing ( bacterio-static effect ) or simply dies ( bacteri-cidal effect ) . just to be clear , antibiotics don ’ t affect viruses , fungi , or parasites - they only bind to bacterial cell targets so they only affect bacterial cell... | since antibiotics do not kill fungi , parasites and viruses , what is the normal treatment of fungi , parasites and viruses ? |
antibiotics are a type of medicine which are used to treat bacterial infections . everyday we come into contact with thousands of bacterial cells . we are colonized with lots of different types of bacteria which live on us , and inside of us ; everywhere from the grooves of your fingerprint , to the nooks and crannies ... | antibiotic development over the years , a number of antibiotics have been discovered in nature or synthesized in the lab . some antibiotics target only specific bacteria and are called “ narrow spectrum ” antibiotics , whereas other antibiotics target many types of bacteria and are called “ broad spectrum ” antibiotics... | if antibiotics kill bacteria , do they affect the good bacteria we contain in our bodies ? |
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