Two iron rails, each 50 feet long, are laid end to end with no space between them. during the summer, the heat causes each rail to increase in length by 0.04 percent. although this is a small increase, the lack of space at the joint makes the joint buckle upward. what distance upward will the joint be forced to rise? (assume that each rail remains straight, and that the other ends of the rails are anchored. round your answer to the nearest hundreth.