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A 1-m3 tank containing air at 25?C and 500 kPa is connected through a valve to another tank containing 4 kg of air at 60?C and 200 kPa (Fig. P3.232). Now the valve is opened and the entire system reaches thermal equilibrium with the surroundings at 20?C. Assume constant specific heat at 25?C and determine the final pressure and the heat transfer.
What is the speed of the inertial frame in which the total momentum of the system is zero?
a piston cylinder device initially contains 0.5 kg of r134a at 200 kpa and a specfic volume of 0.07 m3kg. at this point
you have been asked to design a set of pumps to transfer liquid from a storage tank into a distillation column. what
Calculate the work output and the heat supplied per kilogram of steam for the plant, assuming ideal process° and neglecting the reed pump term. Calculate also the specific steam consumption and the cycle efficiency.
the concrete beam is reinforced with three 20-mm diameter steel rods. assume that the concrete cannot support tensile
Repeat part 1, but assume that the wind turbine is located near a landfill where low Btu gas can be obtained for free. Compare this option with the design in part a, where the gas has to be purchased at $5 per 1000 standard ft3.
a solid cylindrical workpiece made of 5052-o aluminum is 12 cm high and 8 cm in diameter. assuming there is no
a steam pipe of 120 mm outside diameter and is covered with a 20 mm thick layer of calcium silicate insulation k
a single degree of freedom translational vibrating system has a concentrated mass weighing 386 lbs a spring constant of
assume that the flow of air through a given duct is isentropic. at one point in the duct the pressure and temperature
1 kg of a gas in a piston-cylinder assembly undergoes a Carnot power cycle for which the isothermal expansion occurs at 800 K. The change in specific entropy of the gas during the isothermal compression, which occurs at 400 K is -25 kJ/kg. K. Determi..
consider 4 power transistors each dissipating 15 w are mounted on a thin vertical aluminum plate 22 cm x 22 cm in size.
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