Avery slippery block of ice slides down a smooth ramp tilted at angle ? the ice is released from rest at vertical height h above the bottom of the ramp.

a)find an expression for the speed of the ice at the bottom?

b)evaluate your answer to part a for ice released at a height of 22cm on ramp tilted at 40 ? ?

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)