The length of a steel rod at 5°C is 12.500 m. What is its length when heated to 154°C?

Answer 1

the expansion coefficient is
... α = 1.20E-5 m /m·ºK

ΔL = 1.20E-5 * 12.5 * (154 - 5)

L = 12.500 + ΔL