Consider an airplane flying at some real altitude. The outside pressure and temperature are 2.65 x 104N/m2and 215 K respectively. What are the pressure and density altitude?

The two required components for a generator are

The air that we breath is made mostly of which gaseous molecule

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)