Use vpasolve to approximate the largest x-intercept of the function y = cos x + 6.4x−4 . Use a nearby sensible integer value of your choice. Find this nearby sensible integer however you wish, how you find it is not part of the assignment. Assign to p30.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor