Which statement does NOT describe redesign? A You would want to make major changes.

B Engineers retest multiple times.

C Engineers try to make items more efficient.

D It happens all the time.

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