[填空题]
Suppose our Sun event7ynlhd8 :qx ,tually +x-xp vw(p2;,yk uggrcollapses into a white dwarf, losing about half its mass in the process, and winding up with a radius 1.0% of its existing radius. Assum u2+(xvkyg-x,w;pgr p ing the lost mass carries away no angular momentum, what would the Sun’s new rotation rate be?(round to the nearest integer)$\approx$ $rad/s$ (Take the Sun’s current period to be about 30 days.) What would be its final KE in terms of its initial KE of today?$KE_{f}$= $KE_{i}$
Post time 2025-2-18 20:00:22
