Aman pushes on a wall with a force of 50n. what are the size and direction of the force that the wall exert on the man?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Which governments provide garbage collection services to homes and businesses

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.