7. From the tensile stres5-strain behavior for the copper specimen shown in Figure. Determine the following:- a) The modulus of elasticity. (2 points) b) The yield strength at a strain offset of 0.002 . (2 points) c) The maximum load that can be sustained by a cylindrical specimen having an original diameter of 15mm. (8 points) d) The change in length of a specimen originally 220mm long that is subjected to a tensile stress of 360MPa. ( 8 points)