(a) What is the rotational kinetic energy of the Earth about its spin axis? Model the Earth...

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(a) What is the rotational kinetic energy of the Earth about its spin axis? Model the Earth as a uniform sphere and use data from the endpapers.
(b) The rotational kinetic energy of the Earth is decreasing steadily because of tidal friction. Find the change in one day, assuming that the rotational period decreases by 10.0 7s each year.
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