The circuit shown has a total current of 3 amperes. what is the approximate current at two time constants (it2)?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Why are graphs useful when interpreting data

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in