Describe the difference between potential and kinetic energy

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).

An element becomes a positively charged ion when itloses protons. loses electrons. gains electrons. gains neutrons.