[填空题]
Suppose a star the size of our Su:. me92lx oz)fbfdx)go+o: j mn, but w:5op9+wgh4jonk be1uith 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 thk9bgp:u 4 hw1ooej5+ne 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
