Chapter 06, problem 6.20 multistep a brass alloy is known to have a yield strength of 275 mpa (40,000 psi), a tensile strength of 380 mpa (55,000 psi), and an elastic modulus of 103 gpa (15.0×106 psi). a cylindrical specimen of this alloy 6.7 mm (0.26 in.) in diameter and 282 mm (11.11 in.) long is stressed in tension and found to elongate 5.9 mm (0.23 on the basis of the information given, is it possible to compute the magnitude of the load that is necessary to produce this change in length? if not, explain why.

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