Aseries r-l-c circuit is connected to a 70.0 hz ac source that has vrms = 80.0 v . the circuit has a resistance of 80.0 ω and an impedance of 102 ω at this frequency. what average power is delivered to the circuit by the source?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)