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the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
orientalist paintings and other forms of material culture operate on two registers . first , they depict an “ exotic ” and therefore racialized , feminized , and often sexualized culture from a distant land . second , they simultaneously claim to be a document , an authentic glimpse of a location and its inhabitants , ...
why is the first picture have a naked lady ?
the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
though his text has itself received considerable criticism , the book nevertheless remains a pioneering intervention . saïd continues to influence many disciplines of cultural study , including the history of art . representing the “ orient ” as art historian linda nochlin argued in her widely read essay , “ the imagin...
why is the art so ... um provocative ?
the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
similarly , these scholars questioned how artists have represented people of the orient as passive or licentious subjects . for example , in the painting the snake charmer and his audience , c. 1879 , the french artist jean-léon gérôme ’ s depicts a naked youth holding a serpent as an older man plays the flute—charming...
why are all of the girls in the picture naked ?
the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
[ 4 ] timothy mitchell , colonising egypt , ( berkeley : university of california press , 1991 ) . additional resources : roger benjamin , orientalist aesthetics : art , colonialism , and french north africa 1880–1930 ( berkeley : university of california press , 2003 ) . zeynep çelik , “ colonialism , orientalism , an...
what does orientalist have to do with art ?
the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
orientalism : fact or fiction ? orientalist paintings and other forms of material culture operate on two registers . first , they depict an “ exotic ” and therefore racialized , feminized , and often sexualized culture from a distant land . second , they simultaneously claim to be a document , an authentic glimpse of a...
how was this culture depicted as feminized ?
the origins of orientalism snake charmers , carpet vendors , and veiled women may conjure up ideas of the middle east , north africa , and west asia , but they are also partially indebted to orientalist fantasies . to understand these images , we have to understand the concept of orientalism , beginning with the word “...
though his text has itself received considerable criticism , the book nevertheless remains a pioneering intervention . saïd continues to influence many disciplines of cultural study , including the history of art . representing the “ orient ” as art historian linda nochlin argued in her widely read essay , “ the imagin...
what role does economics play in this art style ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
and on the banks of the riverbed just upstream from the cave , engravings of a variety of animals , some with zigzag lines leading upwards , were found and dated to less than 2000 years ago . the apollo 11 cave stones but the most well-known of the rock shelter ’ s finds , and the most enigmatic , remain the apollo 11 ...
have they considered that the apollo 11 cave stones may represent two different drawings ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
that is to say , these early humans possessed the new and unique capacity for modern symbolic thought , “ the human capacity , ” long before what was previously understood . the cave stones are what archaeologists term art mobilier —small-scale prehistoric art that is moveable . but mobile art , and rock art generally ...
is there any artist making very small scale artwork in the modern age ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
that is to say , these early humans possessed the new and unique capacity for modern symbolic thought , “ the human capacity , ” long before what was previously understood . the cave stones are what archaeologists term art mobilier —small-scale prehistoric art that is moveable . but mobile art , and rock art generally ...
anyone out there know of artists that paint in a very small `` transportable '' manner ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
huns mountains larger than the grand canyon ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
inside the cave , above and below the layer where the apollo 11 cave stones were found , archaeologists unearthed a sequence of cultural layers representing over 100,000 years of human occupation . in these layers stone artifacts , typical of the middle stone age period—such as blades , pointed flakes , and scraper—wer...
how did the animals get on the stone ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
but this modern human also drew an animal form with charcoal—a form as much imagined as it was observed . this is what makes the apollo 11 cave stones find so interesting : the stones offer evidence that homo sapiens in the middle stone age—us , some 25,000 years ago—were not only anatomically modern , but behaviorally...
how big is the stones ?
a significant discovery approximately 25,000 years ago , in a rock shelter in the huns mountains of namibia on the southwest coast of africa ( today part of the ai-ais richtersveld transfrontier park ) , an animal was drawn in charcoal on a hand-sized slab of stone . the stone was left behind , over time becoming burie...
the stone was left behind , over time becoming buried on the floor of the cave by layers of sediment and debris until 1969 when a team led by german archaeologist w.e . wendt excavated the rock shelter and found the first fragment ( above , left ) . wendt named the cave `` apollo 11 '' upon hearing on his shortwave rad...
who discover the first painting an where ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what this version of the theorem says is that the ...
so the derivative of an integral of a function is just the function ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
let 's find , for example , the expression for $ \dfrac { d } { dx } \displaystyle \int_ { 0 } ^ { x^3 } \sin ( t ) \ , dt $ . note that the interval is between $ 0 $ and $ x^3 $ , not $ x $ . to help us , we define $ \displaystyle f ( x ) = \int_ { 0 } ^ { x } \sin ( t ) \ , dt $ . according to the fundamental theorem...
but the difference is if x matters since the part being cut is constantly being increase as x increases and the functions derivative is the same as the function being measured ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
what is the fundamental theorem of calculus ? the theorem has two versions .
why is there no +c ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
in other words , $ f $ is an antiderivative of $ f $ . thus , the theorem relates differential and integral calculus , and tells us how we can find the area under a curve using antidifferentiation . b ) $ \displaystyle\int_a^b ! !
so is the derivative the inverse of the integral ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
according to the fundamental theorem of calculus , $ f ' ( x ) =\sin ( x ) $ . it follows from our definition that $ \displaystyle\int_ { 0 } ^ { x^3 } \sin ( t ) \ , dt $ is $ f ( x^3 ) $ , which means that $ \dfrac { d } { dx } \displaystyle \int_ { 0 } ^ { x^3 } \sin ( t ) \ , dt $ is $ \dfrac { d } { dx } f ( x^3 )...
( x^3 ) ' what 's the difference between d/dx and ' ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
to help us , we define $ \displaystyle f ( x ) = \int_ { 0 } ^ { x } \sin ( t ) \ , dt $ . according to the fundamental theorem of calculus , $ f ' ( x ) =\sin ( x ) $ . it follows from our definition that $ \displaystyle\int_ { 0 } ^ { x^3 } \sin ( t ) \ , dt $ is $ f ( x^3 ) $ , which means that $ \dfrac { d } { dx }...
is f ( x ) in the first version of the fundamental theorem of calculus the antiderivative of 'f ' ?
what is the fundamental theorem of calculus ? the theorem has two versions . a ) $ \dfrac { d } { dx } \displaystyle\int_a^x f ( t ) \ , dt=f ( x ) $ we start with a continuous function $ f $ and we define a new function for the area under the curve $ y=f ( t ) $ : $ f ( x ) =\displaystyle\int_a^x f ( t ) \ , dt $ what...
to help us , we define $ \displaystyle f ( x ) = \int_ { 0 } ^ { x } \sin ( t ) \ , dt $ . according to the fundamental theorem of calculus , $ f ' ( x ) =\sin ( x ) $ . it follows from our definition that $ \displaystyle\int_ { 0 } ^ { x^3 } \sin ( t ) \ , dt $ is $ f ( x^3 ) $ , which means that $ \dfrac { d } { dx }...
is f ( x ) in the first version of the fundamental theorem of calculus the antiderivative of 'f ' ?
the evolution of cubism beginning in 1908 , and continuing through the first few months of 1912 , braque and picasso co-invent the first phase of cubism . since it is dominated by the analysis of form , this first stage is usually referred to as analytic cubism . but then during the summer of 1912 , braque leaves paris...
put simply , picasso wants us to remember that the painting is something different from that which it represents . or as gertrude stein said , “ a rose is a rose is a rose. ” essay by dr. beth harris and dr. steven zucker
is the author of this article saying that , to picasso , the painting is not the represented item , and so a paining of a rose is not a rose , and as gertrude stein said , the thing ( a rose ) is just a thing , not a representation of something else ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many people confuse mass with weight . keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weig...
why do we say `` i am 70 kilograms '' then if weight has units of newton and mass has units of kg ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
mass $ m $ is a measure of the inertia of the object ( i.e . how much it resists changes in velocity ) . they are related since larger masses will have larger weights due to $ w=mg $ .
how do we define how much is a kilogram , or a pound , etc ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
there may be other forces that contribute to the acceleration of the object , but the force of gravity is always present . is weight different from mass ? yes , weight is different from mass .
when i step on a scale , does it measure my weight or mass ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying the mass $ m $ of t...
would an astronaut who jumps out of the iss fall down to earth ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
in other words , there will be a gravitational force of magnitude $ mg $ exerted downward on all objects near the earth whether they are falling down , flying up at an angle , sitting at rest on a table , or accelerating upward in an elevator . there may be other forces that contribute to the acceleration of the object...
and do the pods that bring astronauts back from iss missions need an engine for acceleration ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
my question related to the value of force of gravity is how do we know whether to take -9.8m/s2 or +9.8m/s2 ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ .
why does free fall create weightlessness ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
yes , weight is different from mass . weight $ w $ is the force of gravity $ f_g $ exerted on an object . mass $ m $ is a measure of the inertia of the object ( i.e .
what makes the gravitational force fall off if the gravity exerted by earth is infinite in range ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
weight $ w $ is the force of gravity $ f_g $ exerted on an object . mass $ m $ is a measure of the inertia of the object ( i.e . how much it resists changes in velocity ) .
would saying that mass is the amount of matter in an object as accurate as the above definition ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and upward . there is a thruster force of $ 6,700\text { n } $ on the plane in the direction of motion and an air resistance force of $ 4,300 \text { n } $ . what is the force of gravity on...
whats the point of the 6700 n force of the thrusters and 4300 n of the air resistance have to do with problem 1 ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ .
what does `` free fall orbit '' mean ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
what is the difference between balanced and unbalanced force ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
the weight of an object will change if the object is brought farther away from earth , or placed on a different planet , since the force of gravity on the object will be smaller . however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many pe...
why do we feel weightlessness in space station ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
if force is equal to mass times acceleration , how does anything resting on the surface of the earth have downward force ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
the weight of an object will change if the object is brought farther away from earth , or placed on a different planet , since the force of gravity on the object will be smaller . however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many pe...
in the explanation for `` what if we go outer space ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying the mass $ m $ of the object by the magnitude of the acceleration due to gravity $ g=+9....
`` , does this mean that earth is also affected by forces of gravity of other planets ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and upward . there is a thruster force of $ 6,700\text { n } $ on the plane in the direction of motion and an air resistance force of $ 4,300 \text { n } $ . what is the force of gravity on...
my science teacher had a weird explanation but i 'm sure this is n't possible as the friction has to be opposite to the direction because of the third law ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
is the normalforce the same as the force counteracting from newtons third law ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many people confuse mass with weight . keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weig...
should n't weight be negative since the acceleration due to gravity is negative and weight is a force downward ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
if the weighing machine show reading as 70kg or to be more precise 70n as my mass then as the force of gravity is present wouldnt it be my weight and or is the actual reading over g is shown in the scale ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and upward . there is a thruster force of $ 6,700\text { n } $ on the plane in the direction of motion and an air resistan...
in example 1 , i know that air resistance is negligible for the question asked , but in what direction would it be acting in ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
how the absence of any forces but gravity leads to weightlessness ( especially when force gravity is the weight ) ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
how is weight the same thing as the force of gravity ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many people confuse mass with weight . keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ .
all the people express their weights in kilograms.why ca n't we express our weight in newtons ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and upward . there is a thruster force of $ 6,700\text { n } $ on the plane in the direction of motion and an air resistance force of $ 4,300 \text { n } $ . what is the force of gravity on...
and is normal and gravitational force always equal to each other ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth .
if weight is a gravitational force that acts at all times , then is there a way to stop it from acting ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
there may be other forces that contribute to the acceleration of the object , but the force of gravity is always present . is weight different from mass ? yes , weight is different from mass .
how weight varies from place to place but mass never varies ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
however the mass of the object will remain the same regardless of whether the object is on earth , in outer space , or on the moon . many people confuse mass with weight . keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weig...
why do we say `` i am 120 kilograms '' then if weight has units of newton and mass has units of kg ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
for example , a mass of $ 2\text { kg } $ will have a weight of magnitude $ w= ( 2\text { kg } ) ( 9.8\dfrac { \text m } { \text { s } ^2 } ) =19.6\text { n } $ . the weight of an object will change if the object is brought farther away from earth , or placed on a different planet , since the force of gravity on the ob...
why does the force of gravity decrease as an object moves further away from the earth 's surface ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying the mass $ m $ of t...
then why do we say that acceleration produced due to gravity on the surface of earth is 9.8m/s^2 ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
is weight different from mass ? yes , weight is different from mass . weight $ w $ is the force of gravity $ f_g $ exerted on an object . mass $ m $ is a measure of the inertia of the object ( i.e .
is weight the downward force of an object specifically based on its gravity and mass ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
keep in mind that mass has units of $ \text { kg } $ , but since weight is a force it has units of $ \text { n } $ . what do examples involving weight ( force of gravity ) look like ? example 1 : airplane weight an airplane of mass $ 4,500 \text { kg } $ is taking off , flying through the air accelerating forward and u...
or is weight the downward net force affected by gravity ?
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ . weight is a force that acts at all times on all objects near earth . the earth pulls on all objects with a force of gravity downward toward the center of the earth . the magnitude of the force of gravity can be found by multiplying th...
what is weight ? weight $ w $ is just another word for the force of gravity $ f_g $ .
is the `` lighter '' force your weight or is your weight still 98n despite being in water ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
what is diastolic and systolic blood pressure ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
that sounds like a great solution , except for the fact : 1 . if exposed to those high pressures , fluid would get pushed right out of the capillaries and into the lungs ( some capillaries would actually break ! ) , and 2.at high pressures , blood would move past the alveoli so quickly that o2 molecules would n't have ...
is there a circumstance where the lung capillaries would be exposed to such high pressure that they burst , causing blood to enter the lungs ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
if exposed to those high pressures , fluid would get pushed right out of the capillaries and into the lungs ( some capillaries would actually break ! ) , and 2.at high pressures , blood would move past the alveoli so quickly that o2 molecules would n't have time to diffuse into the blood and bind to hemoglobin . this m...
a little off topic , but , how can you figure the blood in the body is blue before it hits o2 ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this is where hemoglobin , a protein that uses iron to help bind to o2 molecules , comes to the rescue . each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can b...
and how does the o2 change the color to red ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
how much blood is in the lungs getting oxygenated ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
blood enters the heart through the superior and inferior vena cava , which are the large veins that bring blood back from the top and bottom of the body respectively . then , the blood remains in the right atrium , which can be thought of as a waiting room for the right ventricle . the right ventricle ( pump # 1 ) has ...
does blood go from the right ventricle pump , then into the lungs pump , then into the left atrium pump , then into the aorta ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are actually bound to oxyhemoglobin ; with only a minority of o2 molecules floating freely in the blood . while air is going in and out of the lungs , the heart is busy working as well . blood enters the heart through the superior and inferior vena cav...
what i 'm trying to ask is how long the blood is in the lungs before it gets pumped back into the heart for distribution ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
it ’ s actually a great question , since at first glance it seems like it would be more efficient to just allow the blood to go out to the body instead of taking a return trip to the heart . think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels ...
what does the symbol ~ mean before numbers ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
also , if we have to have a four chambered heart , how are amphibians able to get by with a three chambered heart ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) .
how long does it take for the heart to pump all the blood in your body ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
if the heart stops beating how many seconds would cells stay alive without oxygen ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
why do we need atriums ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
if exposed to those high pressures , fluid would get pushed right out of the capillaries and into the lungs ( some capillaries would actually break ! ) , and 2.at high pressures , blood would move past the alveoli so quickly that o2 molecules would n't have time to diffuse into the blood and bind to hemoglobin . this m...
could n't the blood flow directly into the ventricles ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure is back down to about 5mmhg ( a reduction of 20mmhg ) . it goes into the left ventricle where it gets a second squeeze causing the pressure to rise back up to about 120mm...
what can i compare a 5 mmhg and 120 mmhg pressure to ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f...
the pressure of a car on your foot ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
when you really stop and think about it , many of the things that we do can be traced back to our cellular needs . a breath of air now let ’ s follow a single breath of air . 21 % of the molecules in this breath are oxygen molecules , and as they race down into the lungs , they end up in the alveoli which are tiny air-...
does the heart distribute air to the rest of the body ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
for the blood test blood is taken out from arteries or vein ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
what is considered as the normal blood pressure of a human ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
why do reptiles do n't have a four chambered heart ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
why does the heart need to be closer to the left side of our body ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
but as blood flows from the capillaries to the veins , what causes the blood pressure in veins ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
once the oxygen has gotten into the blood stream , there has to be a way to rapidly “ move ” the oxygen molecules from one place to another . this is where hemoglobin , a protein that uses iron to help bind to o2 molecules , comes to the rescue . each red blood cell is filled with ~250 million hemoglobin proteins , and...
when you described a hemoglobin being a protein that uses iron to help bind to o2 molecules , what happens when the body lacks iron ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this is where hemoglobin , a protein that uses iron to help bind to o2 molecules , comes to the rescue . each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can b...
does something happen with the blood flow or does it interfere with binding the oxygen molecules to the hemoglobin ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
having lower pressures in the pulmonary circulation is particularly important given the large amount of o2 that needs to diffuse across from the alveoli to the capillaries—every extra millisecond helps ! that ’ s why the human body needs two pumps working at different pressures , high pressure to allow the blood to cir...
general/loosely related question : is it common/possible for larger animals or animals that live in different extremes ( ie : pressure of ocean depths ) to have varying numbers of ventricles/pumps in their hearts ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells have basic needs , and at the top of the list would be these four things : 1 ) access to oxygen 2 ) a source of glucose 3 ) a balanced fluid environment with the right amount of ...
but what is their energy source ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f...
are they able to provide energy without mitochondria ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure...
what is diastolic and systolic blood pressure ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
for the return trip , blood travels through the veins of the body to get back to the right side of the heart and repeat the process . so there you have it – one heart – two pumps : the right ventricle and the left ventricle . why are there two ventricles ?
can you tell me how can the heart make the different between the right and left ventricle squeezes ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
for the return trip , blood travels through the veins of the body to get back to the right side of the heart and repeat the process . so there you have it – one heart – two pumps : the right ventricle and the left ventricle . why are there two ventricles ?
do the left and right ventricle pump at the same time ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
next , the oxygen diffuses from an area of high concentration ( alveoli ) to an area of low concentration ( blood ) , before the blood returns ( through pulmonary veins ) to the left of the heart . just like the right atrium , the left atrium can be thought of as a waiting room for the left ventricle . the left ventric...
why is the `` carotid artery `` at the middle of the aortic arch labeled as the '' left common carotid artery `` ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
in the image of the heart , why are the pulmonary veins drawn red while the arteries are blue ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) .
is 80 % of what we inhale nitrogen then ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are...
i just wanted to ask that why is an `` electrolyte '' important for the cell ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) .
what does mmhg stand for ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are...
what happens to the oxygen molecules floating freely in the blood ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha...
what is the twinge that we sometimes feel in the heart area ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) .
how long does it take for the heart to pump all the blood in your body ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are...
how long exactly does the oxygen molecules go to long body distances such as the toe cell if there was no heart ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure is back down to about 5mmhg ( a reduction of 20mmhg ) . it goes into the left ventricle where it gets a second squeeze causing the pressure to rise back up to about 120mm...
is the `` semilunar valves '' just another name for the pulmonary valve ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
well , diffusion of oxygen works wonders when the distances are very small , but what about large distances like the distance from your lungs to your feet ? could a single molecule of oxygen simply diffuse all the way there ? in theory , it could—but it would take a really long time !
is n't this technically inaccurate as they need a source of atp which could come from ketones ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
meanwhile carbon dioxide molecules make the opposite trip from liquid to gas similar to what happens at the surface of a carbonated beverage . the oxygen diffuses ( think of the drop of ink in a pool of water ) into the fluid interstitial space of the lung , and is then absorbed into the blood stream , and then enters ...
what is the `` fluid interstitial space of the lung '' ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
having lower pressures in the pulmonary circulation is particularly important given the large amount of o2 that needs to diffuse across from the alveoli to the capillaries—every extra millisecond helps ! that ’ s why the human body needs two pumps working at different pressures , high pressure to allow the blood to cir...
how does high or low blood pressure affect the human body ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
why are there two ventricles ? now here ’ s a thought experiment : why not just have just one ventricle ( single pump ) that moves blood to the lungs and then onwards to the rest of the body ? it ’ s actually a great question , since at first glance it seems like it would be more efficient to just allow the blood to go...
can someone please explain to me why we can not use technology to modify our bodies so we can run on just one pump ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) .
can someone tell me which term is correct ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
for the return trip , blood travels through the veins of the body to get back to the right side of the heart and repeat the process . so there you have it – one heart – two pumps : the right ventricle and the left ventricle . why are there two ventricles ?
did some primitive organisms have only one ventricle ?
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha...
by the time the oxygen arrived in your toes by simple diffusion , they would have died and fallen off . once the oxygen has gotten into the blood stream , there has to be a way to rapidly “ move ” the oxygen molecules from one place to another . this is where hemoglobin , a protein that uses iron to help bind to o2 mol...
please help me to find my answer that if the heart stop working hemoglobin present in the blood provides oxygen for four to five minutes is it correct or false ?