[填空题]
Suppose a star the size of our avnvxkut v 9:6.(m x;ySun, but w5 bbmo,fuf4q.ith mass 8.0 times as great, were rotating at a speed of 1.0 revolution every 12 days. If it were to undergo gr.oubf q4b,fm5 avitational collapse to a neutron star of radius 11 km, losing three-quarters of its mass in the process, what would its rotation speed be? Assume that the star is a uniform sphere at all times, and that the lost mass carries off no angular momentum. $\times10^{9 }$ $rev/day$
Post time 2025-2-18 20:00:22
