Two-fifth Ib of gas is contained in a piston cylinder assembly at 1.6ft/lb and 100psia. The gas is allowed to expand to a final volume of 4ft3/lb. Determine the amount of work done in BTU if the process is constant pressure.

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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.