How can potential energy be related to kinetic energy?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Why is metal often used for cooking pan?

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.