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a baby stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f