All electrical devices must have two of what

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

This is the number of complete movements of a wave per second.

If you put a helium-filled balloon in the refrigerator, what will happen?