What are the effects of a force and a torque exerted on an object

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

In a good thermo flask the main cause of heat loss is

Does anyone have the answers to online physics course plato course physics, semester a v3.0