Consider a venturi with an inlet-to-throat area ratio of LaTeX: 1.501.50, mounted on the side of an airplane fuselage where the local air density is LaTeX: 1.225 mathrm {kg/m^3}1.225 k g m 3. A manometer is connected to the inlet and the throat; the height difference of the liquid is seen to be LaTeX: 12.5 mathrm {cm}12.5 c m. The manometer uses mercury, which has a density of LaTeX: 1.36 times10^4 mathrm {kg/m^3}1.36 × 10 4 k g / m 3. However, at this altitude gravity is only LaTeX: 95 % of the gravity at Earth's surface. What speed is the airplane flying at?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)