A 14.0 ft long see-saw has its fulcrum in the middle and has four kids sitting on it. A 680 lb kid sits on the left end and a 76.0 lb kid sits 2 50 ft in front of him A 94.0 lb kid sits on the right end and another kid sits 2 50 ft in front of him. How much must this kid weigh to balance the see-saw?

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!