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A working fluid at 500kPa, 400C (673.15K) is in a piston-cylinder equipment with an initial volume of 0.9 m^3. The fluid undergoes an expansion process which may be described as PV=constant. The final pressure is 200kPa. Calculate the work for this process.
two refrigerators are arranged in series. one of them receives 300 kjcycle from a reservoir at 300 k. the heat
atmospheric air at 95 kpa 30 degrees celcius and 75 humidity is to be conditioned at constant pressure so that it
air at 80 degrees fahrenheit and 80 percent relative humidity is cooled to 51 degrees fahrenheit at a constant pressure
which of these two processes will produce the largest amount of work? (You must provide a full explanation for your choice).
Determine the acceleration of the cabinet when sA = 40 ft. Note that when sB = 0, sA = 0 (points A and B are coincident).
If the engine exerts a traction force of 1/8 of the weight of the train, determine the speed of the train when it has traveled up the slope a distance of 1.1 . Neglect rolling resistance.
a vertical piston-cylinder assembly with 0.2 kg of water is initially a saturated vapor. the piston has a diameter of
A 7/16 nut driver with a 1 1/2 inch diameter handle is used to install a 1/4 20 UNC bolt into a robotic arm. Determine the circumference where the effort is applied
refrigerant 134-a is contained in a 4 ft3 tank at 160 lpfin2. at the beginning the saturated vapour occupies a volume
the pressure at the interface of the troposphere and stratosphere at 11 km is 22.6 kpa abs. in the first layer of the
rod bde is partially guided by a roller at d which moves in a vertical track. knowing that the instant shown the
the suspended load exerts a force F=600 lb at A, and the weight of the bar OA is negligible. Determine the tensions at the cables and the reactions at the ball and socket support O
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