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Neptune has a mass of 1.02 1026 kg and a radius of 2.48 107 m. Assume it is a uniform solid sphere. The distance of Neptune from the Sun is 4.50 1012 m. (Assume Neptune completes a single rotation in 16.1 hours and orbits the Sun once every 6.02 104 Earth days.)
(a) What is the rotational kinetic energy of Neptune on its axis?
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(b) What is the rotational kinetic energy of Neptune in its orbit around the Sun?
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