The molecules in a six-particle gas have velocities
v⃗ 1=(20i^−30j^)m/s
v⃗ 2=(10i^+90j^)m/s
v⃗ 3=(−50i^+20j^)m/s
v⃗ 4=30i^m/s
v⃗ 5=(40i^−40j^)m/s
v⃗ 1=(−50i^−40j^)m/s
calculate vavg.
calculate vrms.

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)