[填空题]
Suppose a star the size of ohx( njb3n w3li 0g-sz)ur Sun, rp3h qp +hk8)6kpyv0 nsd) 755hbtffnbut with mass 8.0 times as 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-quarters of its mass in ttkf8r5sh0bn6h7 3+ppk5qydhf nv)p )he 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
