Which describes the use of a nonrenewable energy source?
burning coal to create steam in power plants
turning turbines with water held behind dams
burning plant wastes to run generators

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