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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?
find the momentum and buoyant length scales.
three cstr are to be used in series. the second reactor has a volume twice that of the first and the third reactors.
determine the expected rating lives in hours of a 35 mm bore 02 and 03 series straight cylindrical bearings operating
a man of mass m1 walks along a plank of length l with a constant acceleration a relative to the plank. The mass of the plank is m2 and the coefficient of friction between the plank and the ground is mu. Find the distance the plank moves if the man..
If the trap door's weight is 50N. Calculate the tension in the string and the reaction at the hinge.
a rigid closed tank of volume 3 m3 contains 5 kg of wet steam at a pressure of 200 kpa. the tank is heated until the
find and list information for the polymer-shaping process rotational molding. what typically is it used to make? you
a chromel-alumel thermocouple junction which can be approximated with a sphere has an effective diameter of 1 mm. it is
a 250-kg crate b is suspended from a cable attached to a 20-kg trolley a which rides on an inclined i-beam as shown.
a stone of 20 kg of mass is held 15 m above a tank containing 200 kg of water. the stone water and the air are at the
a 4 foot diameter pipeline carries water at a temperature of 60 f at a steady flow rate of 40 cubic feet per second.
Calculate the minimal round-trip time delay for a radio communications link between Los Angeles and the satellite.
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