Anyone know how to do this?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

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?