4. Determine, for the curve in figure, for a sample with a length of 20 mm and diameter of 4 mm. a) Young's modulus b) the ultimate tensile stress c) the yield stress (with a 0.2% offset) d) the uniform strain e) the total strain f) the engineering stress-strain curve Force, kN 8 7 6 01 2 1 0 0 T 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 Change in length, mm