A piston-cylinder device initially contains air at 150 kPa and 27 ° C. At this state, the piston is resting on a pair of stops, and the encTosed volume is 400 L. The mass of the piston is such that a 350-kPa pressure is required to move it. The air is y now heated until its volume has doubled. Determine (a) the final temperature, (b) the work done by the air, and (c) the total heat transferred to the air.

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Q: A piston-cylinder assembly shown below is initially containing 2g of air at STP. Heat is then added…

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Q: The system contains a gas at 300 kPa, with a volume of 0.2 m3 and at 40 °C. More gas is added added…

A: Given data:- P1=300 kPa, V1=0.2 m3 T1=40°C=(40+273)=313K T2=150°C=(150+273)K=423K compression…

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Q: Determine the internal energy of saturated liquid water at 225 kPa.

A: Given data: Saturated liquid water at 225 kPa

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Q: Calculate the work done during this process

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A: For solution refer below images.

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.