A wire of length L 5 4 ft and diameter d=0.125 in. is stretched by tensile forces P= 600 lb. The wire is made of a copper alloy having a stressstrain relationship that may be described mathematically by:. sigma = 18000 epsilon/1 + 300 A) Determine the stress on the wire due to the force P=1.B) Determine the strain, epsilon_p, in the wire due to the force epsilon P= 3pt . C) Determine the elongation. delta_L, of the wire in inch due to the force P delta_L= 1ptD) Determine the residual strain, epsilon_R, if the force P is removed, epsilon_R= 3pt. E) Determine the permanent set (or elongation) of the wire, delta_permanent= 2pt. F) What is the elastic strain recovery, epsilon_Recovery= 2pt. G) What length of wire was elastically recovered, delta_Elastic= 2pt. H) If the force is applied again, what is the proportional limit, on sigma_PL= 2pt. I) What is the toughness of the original wire assuming it breaks at a strain of 0.03. toughness= 4pt.