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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The steel rails of a railroad track are laid in the winter at a temperature of 15 degrees fahrenheit with gaps of 0.01 feet between the ends of the rails. Each rail is 33 feet long. At what temperature will the rails touch end to end? What stress will result in the rails if the temperature rises to 110 degrees fahrenheit?

Answer: 9,434.1 psi.

I'm not sure how to come up with this answer. Could you help me work this problem out step by step please?

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