A schoolyard teeter-totter with a total length of 6.3 m and a mass of 41 kg is pivoted at tis center. A 18 kg child sits on one end of the teeter-totter. 1.) Where should a parent push vertically downward with a force of 220 N in order to hold the teeter-totter to level?
x1= m from center

2.)Where should the parent push with a force of 320 N?
x2=m from the center

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!