2km south is a measure of what

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

The total amount of energy contained in an object