Please answer asap aswell

3. Rods A (steel) and B (copper) are firmly attached to the two rigid walls and each other. Initially, there is no stress in the rods. Calculate the stress in each material (rod) if the temperature increases by 50 degrees Fahrenheit and the supports have no movement. asteel = 0.0000065 1/F acopper = 0.0000093 1/F Esteel = 30 * 106 Psi Ecopper = 15 x 10 Psi Length of A = 1000 mm / Area of A = 2 in- Length of B = 1200 mm / Area of B = 1.5 in2