uring a polytropic process, 10 lb of an ideal gas, whose R = 40 ft.lb/lb.R and cp = 0.25 Btu/lb.R, changes state from 20 psia and 40°F to 120 psia and 340°F. Determine (a)n, (b) U and H, (c) S, (d)Q, (e)∫ , (f)- ∫...... (g)If the process is steady flow during which K = 0, what is Ws?. What is K if Ws = 0? (h)What is the work for a nonflow process?

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Q: 2.4kg of water vapor is cooled in a closed, rigid tank from T = 440 °C and Р = 100 bar to a final…

A: Givenm=4kginitial state T1=440oCP1=100 barfinal stateT2=320oC

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A: Given    Pressure, P1 =  5 MPa                   P2 =20 MP Temperature, T1 = 280°C = 503 K Find Heat…

Q: Determine the work and heat transfer, in Btu.

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Q: A divider separates 1 lb mass of carbon monoxide (CO) from a thermal reservoir at 150o F. the carbon…

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Q: Air within a piston-cylinder assembly, initially at 50 lbf/ in.2, 510°R, and a volume of 6 ft3, is…

A: Given data: P1=50 lbf/in2=7200 lb/ft2T1=510°RV1=6 ft3V2=3 ft3k=1.4 To fing: the mass, in lb, final…

Q: A piston-cylinder assembly contains 0.4 lb of air initially at a pressure of 30 lb/in² and a…

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Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 250 lbf/in²…

A: Givenm=2lbsP=250lbf/in2  at saturated vapourV=7.08 ft3

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A: given:Ideal gas undergoes a process from state 1 to state 2,T₁ = 300 K, p₁ = 100 kPaT₂ = 600 K, p₂ =…

Q: A piston-cylinder assembly contains 0.6 lb of air initially at a pressure of 30 lbf/in² and a…

A: According to the given data P1=P2=30lb/in2=30x144=4320 lb/ft2 m=0.6lb T1=300°F =300+460=760°R k=1.4…

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Q: A closed, rigid tank is filled with water. Initially, the tank holds 0.8 lb of saturated vapor and…

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Q: A closed, rigid tank is filled with 0.02 lb of water, initially at 120°F and a quality of 50%. The…

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Q: One kilogram of an ideal gas at 5.5 bar with an initial volume of 0.3 m3 expands to a final volume…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.