Determine el trabajo que una persona debe efectuar sobre su mochila que transporta alimentos de 15 kg para llevarla a la cima de una colina de altura h = 20 m como se observa en la figura (4 Pts.)

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