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A rigid vessel contains 10 kg of steam. The steam is initially at 10 bar and 300C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings. The surroundings are at a constant temperature of 20C. Determine the change in entropy of the system, the surroundings and the universe during this process.
Describing the potential electronic commerce aspects related to the development of the Kudler Fine Foods Frequent Shopper Program
determine the number of kmols of carbon monoxide contained in a 0.27 m3 compressed gas cylinder at 200psi and 72f.
a spherical balloon filled with heliumm is initially at 300 k and 100 kpa with a diameter of 5 cm. the balloon is
A reversible heat pump cycle operates between a cold reservoir at 300ºC and a hot reservoir at 500ºC. Determine the coefficient of performance. Is it possible for a heat engine to operate on a cycle with an efficiency of 0.5 between reservoirs at 100..
a 4mx5mx6m room is to be heated by a baseboard resistance heater. it is desired that the resistance heater be able to
an electric water heater having 0.2 m3 capacity employs an electric heater to warm the water from 22degc to 55degc. the
Outdoor air leaks into a building through cracks in the walls at the rate of 700 m3/h (this is infiltratation). The outside air is at a temperature of -16.1C and a humidity ratio of 0.001 kgv/kga. The density of the outside air is1.4 kg/m3. The indoo..
you work for the city water department and need to pump 3400 litersmin of water from a tank at ground level into a
water is flowing through a gradual constriction in a pipe. the upstream diameter of the pipe is d14cm and the
A voltage signal is produced by a transducer. The signal contains its strongest frequency component at 50 Hz (amplitude = 5.0 V), plus a weaker component at the second harmonic (100 Hz) with amplitude 2.0 V.
estimate the land area required to grow willow that would provide 1 gw of power in a region where the annual solar
a frictionless piston-cylinder device and a rigid tank initially contain 12kg of an ideal gas each at the same
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