gc textbook chapter 8 Rotational Motion (id: 8aee9a1cc)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

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Suppose our Sun eventually collapses inthghi:q 9 zco,;o a white dwarf, losc p6;cyr a+se t2 vp,)z22fzlqing about half its mass in the process, and winding up with a radius 1.0% pz6tefq ; z 2lc,vyr+)2s 2acpof its existing radius. Assuming the lost mass carries away no angular momentum, what would the Sun’s new rotation rate be?(round to the nearest integer)$\approx$    $rad/s$ (Take the Sun’s current period to be about 30 days.) What would be its final KE in terms of its initial KE of today?$KE_{f}$=    $KE_{i}$

参考答案:
空格1: 0.05±2%  空格2: 20000±2% 


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