Problem 01 Figure 1 shows the stress-strain curves from the tensile tests of four different materials: A, B, C and D. Choose T for True and F for false for the following statements about the materials. a. T/F: Material A is said to be the strongest. b. TF: Material B is said to be the most ductile. c. T/F: Material D is said to have the smallest Young's modulus. d. T/F: Material C is said to provide the highest modulus of toughness. e. T/F: Material C has higher modulus of resilience than material D. o (stress) A 2a W & (strain) Figure 1: Stress-stain curves for problem 01 Problem 02 Thermal properties A bar has an initial length of 100 mm at room temperature of 27C. The tensile test indicates that the bar yields when it reaches is the stress level of 145 MPa and the strain value of 2.071 x 103. The bar is later placed in an oven and heated from room temperature to 100 C. The linear coefficient of thermal expansion of the material is 23 x 10-6 C-1 at 27C, and 34 x 10-6 C-1 at 527C. Determine: a. What is the linear coefficient of thermal expansion at 100 C? b. What is the length of the bar in millimeter at 100 C? c. Does the heating from room temperature to 100 C the cause the bar to yield? Page 1/2 Figure 2: Plate configuration for problem 03