When both the velocity and the acceleration vectors are positive, a
Oь
the object is at rest
the object is speeding up to the right direction
the object is speeding up to the left direction
the object is slowing down to the right direction
с
Od

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)