a 0.50n weight is stuck to the 20cm mark of a uniform metre stick, which weighed 0.5n before the weight was added. you can balance the metre stick horizontally on your finger, if you put your finger in the right place.
how far from the 0.0cm end do you need to put your finger for the metre stick to be balanced?
Answers: 1
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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)
Answers: 3
a 0.50n weight is stuck to the 20cm mark of a uniform metre stick, which weighed 0.5n before the wei...
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