Provide complete solution and detailed diagram.  The internal energy of air having an enthalpy of 300 KJ/kg is: A. 234 KJ/kg                B. 215 KJ/kg                C. 321 KJ/kg          D. 423 KJ/kg

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Q: The energy required to raise the temperature of a unit mass of a substance by one degre, explain it.

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Q: Thermodynamics problem. If I have water vapor at 125◦C inside a piston, what pressure is necessary…

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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.