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Q1. All through its evolution, a star of 1 solar mass (the mass of our Sun) expands to 3.33 times its original radius. Assume that, during this expansion:
1. Star has no appreciable loss of mass2. Mass is uniformly distributed through the volume3. Star remains spherical during the entire process
a) If the star was initially spinning with a period of To = 36.9 days: find Tf, the period of rotation of the star after the expansion1 days
b) compute the ratio R., where
R = (final kinetic energy of the star)/(initial kinetic energy of the star)
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