4. From the tensile stress-strain behavior for the brass specimen shown in figure. If original diameter is 12.8 mm. determine the following: (a) The modulus of elasticity (b) Load at yield strength (c) The maximum load that can be sustained by a cylindrical specimen. (d) The change in length of a specimen originally 250 mm long that is subjected to tensile strength. Stress (MPa) 500 400 Tensile strength 450 MPa (65,000 psi) 300 4 10³ psi MPa 40 200 30 200 T 100 100 20 10 Yield strength 250 MPa (36,000 psi) 70 60 50 40 30 30 20 10 10 0 0.005 0.10 0.20 0.30 0.40 Strain Stress (10 psi)