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A refrigeration cycle operating between two reservoirs receives energy QC from a cold reservoir at TC = 280 K and rejects energy QH to a hot reservoir TH = 330 K. For each of the following cases determine whether the cycle operates reversibly, irreversibly, or is impossible: (a) QC = 1500 kJ, QH = 2200 kJ, (b) QC = 1500 kJ, Wcycle = 120 kJ, (c) QH = 1600 kJ, Wcycle = 500 kJ, (d) Coefficient of performance (COP) = 6.
Determine the total mass of nitrogen (N2), in kg, required to inflate all four tires of a vehicle, each to a gage pressure of 180 kPa at a temperature of 25oC. The volume of each tire is 0.6 m^3, and the atmospheric pressure is 1 atm.
a mass of 2.4 kg of air at 150 kpa and 12ordmc is contained in a gas-tight frictionless piston-cylinder device. the air
the average accelerations of a us navy fighter jet takeoff to an us air force fighter jet takeoff are very different.
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explain the factor, which inhibit the use of a very high resolution and a large number of colors for display in the case of raster scanning display devices.
a pump is used to move water from a lower reservoir to an upper reservoir. the water surface elevation in the upper
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a 4.0 m3 rigid tank contains 3.7 kg of superheated water vapor initially at .20mpa . an electric radiator heating
it is desired to inflate a baggie with a volume of 904 milliliters by filling it with oxygen gas at a pressure of 0.865
think that a combined reheat and regenerative cycle and utilise the steam as the working fluid. steam enters the high
calculate the percentage volume change that would occur if a material were to be transformed from fcc to bcc. assume
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