Question: A 270-m-long bridge is improperly designed so that it cannot expand with temperature. It is made of concrete with a = 1.00 x 10-5

A 270-m-long bridge is improperly designed so that it cannot expand with temperature. It is made of concrete with a = 1.00 x 10-5 C -1. (a) Assuming that the maximum change in temperature at the site is expected to be 26C, find the change in length the span would undergo if it were free to expand. cm (b) Show that the stress on an object with Young's modulus Y when raised by AT with its ends firmly fixed is given by aYAT. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen This answer has not been graded yet. (c) If the maximum stress the bridge can withstand without crumbling is 2.0 107 Pa, will it crumble because of this temperature increase? Young's modulus for concrete is about 2.0 1010 Pa. Yes No

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