Physics, 27.08.2019 21:20 ejcastilllo
3. the electric field of a sinusoidal electromagnetic wave has an amplitude of 5.0 v/m. how much radiation energy passes through a 1.5 m2 window perpendicular to the wave during one hour? a) 258 j b) 459 j c) 351 j d) 531 j e) 179 j
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Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?
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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)
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3. the electric field of a sinusoidal electromagnetic wave has an amplitude of 5.0 v/m. how much rad...
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