11. (A) (USCS units) A hot working operation is carried out at various speeds. The strength constant = 30,000 lb/in2 and the strain rate sensitivity exponent = 0.15 in the

strain rate sensitivity equation. Determine the flow stress if the strain rate is (a) 0.01/sec, (b) 1.0/sec,and (c) 100/sec. (4')