Physics, 24.05.2021 05:20 deepspy599otchpd
A student does 3000 J of work in climbing a flight of stairs in 10 seconds. How much power was required?
Answers: 1
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If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
Answers: 3
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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 student does 3000 J of work in climbing a flight of stairs in 10 seconds.
How much power was requ...
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