[填空题]
Suppose our Sun eventually collapses ihk q2mv uz*/.:qxvzux yv, 9a(nto a white dwarf, losing abou5 um6 vykgmx ;u,m:h*lt half its mass in the process, and winding up with a radius 1.0% of its existing radius. Assuming the lost mass carries away no a5m y,:ukhu*mlxgv6 m;ngular 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
