Agas in a piston-cylinder assembly undergoes a compression process for which the relation between pressure and volume is given by pv^n=constant. the initial volume is 0.1(m^3), the final volume is (0.04m^3), and the final pressure is 2 bar. determine the initial pressure, in bar, and the work for the process, in kj, if (a) n = 0, (b) n =1, (c) n = 1.3. be sure to plot each process on a pv diagram.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Fluids at rest possess no flow energy. a)- true b)- false