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A refrigerator cycle has a COP of 3 and removes 100kW of heat from a building, which is kept at 23C. The device rejects heat to an energy reservoir at 33C. What is the net entropy change in this process? What is the maximum possible temperature of the high temperature reservoir to still satisfy the second law of thermodynamics?
a liquid-vapor mixture of 5kg of water with a quality of 0.75 and a pressure of 5bar is expanded in an isobaric process
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a pan of negligible mass is attached to two identical springs of stiffness k 250 nm. if a 10-kg box is dropped from a
Given that the nominal diameter (per print) is 15.00mm +/-0.10mm, what can be said about the expected defect rate?
Why do thermoplastics tend to become brittle in very cold weather?
How to do matlab coding for computerized relative allocation of facilities technique
a 4-in. diameter disk shown weigts 20 lb. the disk is released at rest when theta30 degrees and rolls down the curved
a residential heat pump with a coefficient of performance of 2.4 delivers energy to the dwelling at a rate of 20 kw.
a 30-cm-diameter 5-m-long steam pipe passes through a room where the air temperature is 20 c. if the exposed surface of
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