1.

A concrete railroad tie has a length 2.45m on a hot sunny day having temperature 35∘C. What is the length of the railroad tie in the winter when the temperature dips to −25∘C? (Take the coefficient of linear expension of railroad as 12×10−5/∘C)

Answer»

A concrete railroad tie has a length 2.45m on a hot sunny day having temperature 35C. What is the length of the railroad tie in the winter when the temperature dips to 25C? (Take the coefficient of linear expension of railroad as 12×105/C)



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