Which statement explains the flow of heat? Heat moves from one place to another like a radiating wave. Heat moves as packets of energy are transferred from one substance to another. Heat moves as molecules of one substance collide with molecules of another substance, transferring kinetic energy.

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