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Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.
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How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?
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Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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Which chemical layer of Earth is creating rift valleys?...
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