What is energy conservation?
benutivity asked:
1. What is energy conservation?
1. What is energy conservation?
2. How does it relate to heat conduction?
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December 22, 2008
December 6, 2008
Conservation of energy and momentum concerning pair annihilation?
Bob B asked:
Use the conservation of energy and momentum to show that pair annihilation CANNOT produce only on photon.
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Use the conservation of energy and momentum to show that pair annihilation CANNOT produce only on photon.
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November 27, 2008
Does light behave to the rules of conservation of energy?
Jack Jeebs asked:
If light bounces off of a mirror, shouldn’t there be an equal and opposite reaction to the force, giving the mirror some energy, and the light will lose some velocity…. but then light is always moving at the speed of light so how is it compensated? Will the photon just pull energy out of nowhere and continue at the speed of light?
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If light bounces off of a mirror, shouldn’t there be an equal and opposite reaction to the force, giving the mirror some energy, and the light will lose some velocity…. but then light is always moving at the speed of light so how is it compensated? Will the photon just pull energy out of nowhere and continue at the speed of light?
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November 24, 2008
if the law of conservation states that energy can not be destroyed nor created, why are we ask to save energy?
vhersz asked:
applying the law of conservation, why are we ask to save energy and use it wisely?
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applying the law of conservation, why are we ask to save energy and use it wisely?
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Does this violate the law of conservation of energy? What is the source of additional energy?
ljean_2363 asked:
Jupiter, Saturn, and Neptune all radiate more energy into space then they receive from the Sun.
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Jupiter, Saturn, and Neptune all radiate more energy into space then they receive from the Sun.
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Can someone please help me with finding vertical height for conservation of energy?
Whiterose7 asked:
A ball is launched with initial speed v from ground level up a frictionless slope. The slope makes an angle theta with the horizontal. Using conservation of energy, find the maximum vertical height, h max, to which the ball will climb. Express your answer in v, g or theta.
A ball is launched with initial speed v from ground level up a frictionless slope. The slope makes an angle theta with the horizontal. Using conservation of energy, find the maximum vertical height, h max, to which the ball will climb. Express your answer in v, g or theta.
Can someone please show me how to do this problem? Thank you!!
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November 20, 2008
with reference to the rotation of the earth how is the law of conservation of energy followed?
nirajshahahmd asked:
consider the rotation of the earth. here no external force acts on it yet it keeps on rotating and has done that for countless years which implies that energy is utilized without supplying it. how is it possible?
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consider the rotation of the earth. here no external force acts on it yet it keeps on rotating and has done that for countless years which implies that energy is utilized without supplying it. how is it possible?
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Is the law of conservation of energy generally true?
Brian M asked:
I know the conservation of energy can be violated for short times, but not overall. is that right?
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I know the conservation of energy can be violated for short times, but not overall. is that right?
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November 17, 2008
Law of Conservation of Energy and Global Warming?
Tsuna asked:
Concerning the physics law of conservation of energy…
Concerning the physics law of conservation of energy…
For global warming to occur, mustn’t global cooling occur?
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November 10, 2008
Could someone explain the law of conservation of energy please?
Purple Moogle asked:
According to this law, in a closed system the level of energy remains constant. But if you light a fire and it goes out, after the heat has disapated, what energy is left?
According to this law, in a closed system the level of energy remains constant. But if you light a fire and it goes out, after the heat has disapated, what energy is left?
I guess there’s some definition of energy that I missed. Please enlighten me.
Thanks.
Additionally, how closed does said system need to be?
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