A hawk flies 20 km in 15 minutes. What is the average speed of the hawk?

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)

Why does the liquid rise up through the dip tube when the valve is open

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c