HURYY PLEASE The processes that transform inputs to outputs are what part of a system?
the components
the surroundings
the flow
the boundary

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

When you turn on a battery-operated device, an electrical circuit is

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?