(10 pts.) a cylindrical rod 500 mm (20.0 in.) long, having a diameter of 12.7 mm (0.50 in.), is to be subjected to a tensile load. if the rod is to experience neither plastic deformation nor an elongation of more than 1.3 mm (0.05 in.) when the applied load is 29,000 n (6500 lbf), which of the four metals or alloys listed below are possible candidates? justify your choice(s).