[填空题]
Suppose a star the size of oun4j72w -knbd 0fua(bxr Sun, but witu-zg :p g +j5.d4u.vuzl 5pkfrh 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 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 momep5zud .+kruvgzl:p.5j 4 gf-untum. $\times10^{9 }$ $rev/day$
Post time 2025-2-18 20:00:22
