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Steam in a piston cylinder assembly undergoes a polytropic process with n=2 from an initial state of P=500 psi, v1=1.7 ft3/lb, u1 = 1363.3 Btu/lb to a final state u2 = 990.5 Btu/lb. There is also heat transfer from the steam during the process of magnittude 343 Btu. The mass of the steam is 1.2 lb, find the work in Btu and the specific volume in ft3/lb. Ignore the changes in the kinetic and the potential energies.
a piston-cylinder device initially contains 0.25 kg of nitrogen gas at 130 kpa and 180degc. the nitrogen is now
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a pipe in a manufacturing plant is transporting superheated vapor at a mass flow rate of 0.3 kgs. the pipe is 10 m long
A 12 kN force is exerted on a rocker arm. The moment of inertia (I) of the crosssection with respect to the neutral-axis is 43.3x10-9 m4.
nitrogen n2 gas within a piston-cylinder assembly undergoes a compression from p1 0.2mpa v12.75 m3 to a state where p2
a certain object weighs 300 n at the earths surface. determine the mass of the object in kilograms and its weight in
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saturated steam at 2 mpa is contained in a piston-cylinder device. the initial volume is 0.25 cubic meters. heat is
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the yield stress of a tension specimen machined from a 0.5 m wide by 0.6 cm thick copper sheet is 145 mpa. the sheet is
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the support at a is a ball-and-socket joint that is incapable of supporting any moments. the tension in the cable
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