Apart made from annealed aisi 1018 steel undergoes a 21 percent cold-work operation. (a) obtain the yield strength and ultimate strength before operation. determine the percent increase in each strength. before and after the cold- (b) determine the ratios ultimate strength to yield strength the part? work operation.

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?