The steel railroad increases its length when exposed to heat from 700F to 950F. The coefficient of thermal expansion is 11.7 x 10-6 m/m-0C. Find the strain. A. 4.53 x 10-4 C. 1.625 x 10-4 B. 2.625 x 10-4 D. 3.53 x 10-4

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Temperature Difference and Heat Transfer

Whenever there is a flow of heat flux resulting from a temperature gradient within the material or between two materials, there is heat transfer. Heat transfer primarily arises due to temperature differences between two bodies or within bodies. The term temperature gradient denotes temperature differences or variation of temperature due to change in some quantity. The fundamental use of the concept of temperature is found in the zeroth law of thermodynamics.