Only two horizontal forces act on a 2.0 kg body. one force is 3.2 n, acting due east, and the other is 7.1 n, acting 38° north of west. what is the magnitude of the body's acceleration?

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