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A container filled with 73 kg of liquid water at 99ºC is placed in a 60-m3 room that is initially at 12ºC and 1 atm. Thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room. Using constant specific heats, determine (a) the final equilibrium temperature, (b) the amount of heat transfer between the water and the air of the room, and (c) the entropy generation. Assume the room is well sealed and heavily insulated.
an alcohol manufacturing facility emits air with 500 ppm ethanol. the air flows out several roof vents at a total flow
two boys push on the gate as shown. if the boy at b exerts a force of fb 30 lb determine the magnitude of the force fa
an object with a mass of 5 kg undergoes a process during which there is heat transfer from the object at a rate of 5 kj
determine the maximum theoretical speed that may be achieved over a distance of 360ft by a car of weight w starting
liquid water enters a 25-kw pump at 100kpa pressure at a rate of 5kgs. determine the highest pressure the liquid water
a balanced wheel supported on springs is rotating at 1200 rpm. if a bolt weighing 15 g and located 5 cm from center
the power p required to drive a fan is believed to depend on density p flow rate q impeller dia. d and angular veloctiy
an ideal vapor-compression refrigeration cycle with ammonia as the working fluid has an evaporator temperature of -20 c
a particular type of tennis racket comes in a midsize version and an oversize version. sixty percent of all customers
bone cement used by orthopedic surgeons to set artificial hip implants in place is methyl methacrylate polymerized
the heat-transfer rate to the surroundings from a person at rest is about 100w. supposed the ventilation system fails
the piston diameter is dp 3 mm and the piston position is initially s1 5 cm from the bottom of the piston. at this
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