[填空题]
Suppose a star the size of2a +2rkalf:get )htd. our Sun, but with mass 8.0 times as bv/ j5rje onr8s*8/ypv3 ie y/great, were rotating at a speed of 1.0 revolution every 12 days. If it were to undergo gravitational collapse to a neutron star of radius 11 km, losing three-quartersei rns*o8 /j ev3y//jpr85yvb 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
