When an electric current flows through a long conductor, each free electron moves
a. back and...
Answers: 2
Physics, 22.06.2019 13:00
Ways that industry and agriculture use physical properties to separate substances
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Physics, 22.06.2019 14:20
4r-134a enters the condenser of a residential heat pump at 800 kpa and 50Ā°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3Ā°c. the refrigerant enters the compressor at 200 kpa superheated by 4Ā°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
Physics, 22.06.2019 14:40
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
Answers: 2
Physics, 22.06.2019 14:40
Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?
Answers: 1
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