Energy Smart

ljean_2363 asked:


Jupiter, Saturn, and Neptune all radiate more energy into space then they receive from the Sun.

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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.

Can someone please show me how to do this problem? Thank you!!

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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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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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Cordell asked:


have a chance in 2008, if not then what about 2012 or 2016?

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Tsuna asked:


Concerning the physics law of conservation of energy…

For global warming to occur, mustn’t global cooling occur?

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Joey asked:


I am doing homework, and my last page in the packet that I have to do is draw a picture or picture(s) with thermal energy conservation ideas. You guys got any good ones? Keep in mind, I’m 14, and not a very good artist. Give me something good.

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jonathan m asked:


for example: We know that refrigerators produce CFC’s .. If we do not use this at home.. We help prevent Global Warming..
(please make the slogan short)

Thanks..

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Sheggy asked:


Where is the pendulum when it is moving its fastest?

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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?

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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