At the bottom of a pool filled with water (density of 10 kg/m ) the pressure is equal to 150 000 Pa. Knowing that the atmospheric pressure is 10 Pa and assuming the acceleration of gravity equal to 10 m/s , determine the depth h of the pool (a) about 0.5 m
(b) about 3 m (c)
about 10 m
(d) can not be calculated with the data provided
(e) about 5 m

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)