Phase change from a liquid to a solid is what type of property change

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final