A woman of mass 60 kg is standing in a lift at a shopping centre. The lift is at rest.

1. State the value of the weight of the woman.

2. State the valuo of the force excrted on the woman by the Noor of the lift.

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)