The spark plug ignites the fuel-air mix in the chamber. This converts energy in the bonds of the fuel-air mix to energy. This energy is then converted to the energy of the piston as the gas expands and pushes the piston down.

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