I am so lost by this physics problem...can someone please help?

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03-25-2008, 11:37 AM

jpc41

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I am so lost by this physics problem...can someone please help?

The mass of a star is 1.170×1031 kg and it performs one rotation in 28.30 day. Find its new period (in days) if the diameter suddenly shrinks to 0.610 times its present size. Assume a uniform mass distribution before and after.

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