! Required information At room temperature (20C), a 0.5-mm gap exists between the ends of the rods shown. The temperature eventually reaches a value of 138C. A 0.5 mm 300 mm - 250 mm B Aluminum A = 2000 mm Stainless steel A = 800 mm E = 75 GPa E = 190 GPa a 23 x 10-6C a 17.3 X 10-6/C