Acrane dose 62500 joules of work to lift the boulder distance of 25 meters how much does the boulder way

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

Why should seat belts not be mandatory quick plz

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?