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Mercury has a mass of 3.30 1023 kg and a radius of 2.44 106 m. Assume it is a uniform solid sphere. The distance of Mercury from the Sun is 5.79 1010 m. (Assume Mercury completes a single rotation in 1.41 103 hours and orbits the Sun once every 88.0 Earth days.)
(a) What is the rotational kinetic energy of Mercury on its axis?
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(b) What is the rotational kinetic energy of Mercury in its orbit around the Sun?
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