Atornado may be simulated as a two-part circulating flow in cylindrical coordinates, with vr = vz = 0. vtheta = ωr if r ≤ r and vtheta = ωr2 / r if r ≥ r. determine the vorticity and the strain rates in each part of the flow.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

What is a monomer? how do they form a ploymer from the view point of chemical bonding?

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)