Calculate (a) the equivalent number of vacancies per unit cubic meter in pure copper at 500° c and (b) the vacancy fraction at 500° c in pure copper. assume that the energy of formation of a vacancy in pure copper is 0.90 ev and boltzmann's constant k=8.62x105 ev/atom-k, pcu 8.96mg/m^3 t 24 124

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?