Draw free-body diagrams and identify all missing forces, including net force, for each situation: You push a 15 kg box with 45 N and it has a net force of 20 N acting on it

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 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 energy added you so much!