piston fits inside a 30-cm-diameter vertical pipe and is pulled up to a height of 6.1 m. The pipe's lower end is immersed in water, and the atmospheric pressure is 100 KPaa. The graviattional acceleration is 9.45 m/s². Determine: (a) the force required to hold the piston at the 6.1-m mark; (b) the pressure of the water on the underside of the

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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.