Answer to Question #106902 in Molecular Physics | Thermodynamics for Layla

Question #106902
A steel railroad track has a length of 21 m
when the temperature is 2◦C.
What is the increase in the length of the
rail on a hot day when the temperature is
40 ◦C? The linear expansion coefficient of
steel is 11 × 10−6
(
◦C)−1
.
Answer in units of m.
1
Expert's answer
2020-03-30T08:05:21-0400
"\u0394L=\u03b1L\u0394T"

"\u0394L=(11\u22c510 \n^{\u22126}\n )(21)(40\u22122)=0.0088 m"


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