A gas in a piston-cylinder assembly undergoes two processes in series.
From state 1 to state 2 there is energy transfer by heat to the gas with a magnitude of 375 kJ, and the gas does work on the piston with a magnitude of 685 kJ.
The second process, from state 2 to state 3, is a constant pressure compression at 410 kPa during which there is a heat transfer from the gas with a magnitude of 475 kJ.
The follow data are also known:
U1 = 2030 kJ and U3 = 3520 kJ.
A) Neglecting changes in kinetic and potential energy, calculate the change in volume of the gas during process 2-3 in m^3.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.