003 (part 1 of 2) 10.0 points A steel railroad track has a length of 22 n1 when the temperature is 0C. What is the increase in the length of the rail on a hot day when the temperature is 30C? The linear expansion coefcient of steel is 11 X 10'6 (0C)_1. Answer in units of In. 004 (part 2 of 2) 10.0 points Suppose the ends of the rail are rigidly clamped at 0C to prevent expansion. Calculate the thermal stress in the rail if its temperature is raised to 30C. Young's modulus for steel is 20 x 1010 N/ 1112. Answer in units of N / m2