Final answer:
Air conditioners have a lower coefficient of performance (COP) compared to heat pumps because Qh is greater than Qc. The COP of a heat pump (COPhp) is stronger than that of an air conditioner.
Step-by-step explanation:
Air conditioners have a lower coefficient of performance (COP) compared to heat pumps because the COP of a heat pump (COPhp) is greater than that of an air conditioner. The COP is calculated by dividing the heat output (Qh) by the work input (W). Since Qh is greater than Qc (heat output is greater than cooling output), the COP of a heat pump is stronger than that of an air conditioners.