Afather (mf = 85 kg) and his daughter (md= 45 kg) stand on a flat frozen lake of negligible friction. they hold a 14 ­m­ long rope stretched between them. the father and daughter then pull the rope to bring them together. if the father is initially standing at the origin, how far from the origin will they meet?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

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 equation2: 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!