In rolling, small-diameter rolls or small thickness reductions per pass tend to deform the metal plastically more at its surfaces than in the bulk, this type of deformation generates tensile residual stresses on the surface and compressive stresses in the bulk. a)- true b) false

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.