(a) the lattice constant of gaas is 5.65 å. determine the number of ga atoms andas atoms per cm 3 .
( b ) determine the volume density of germanium atoms in a germa-nium semiconductor. the lattice constant of germanium is 5.65 å.

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.

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false