""If the coefficient of thermal expansion of steel is 1.1 x 10^ -5 ℃^ -1 and a railway rail is 4. 5 m long, how much would the length Δ L of the rail increase by if the temperature changes from -10 ℃ to 30 ℃? ""
Could anyone direct me to a youtube video, or something that could help understand how to work this out and get the answer.
Im not sure
The Attempt at a Solution
Not sure. Please and thank you for your help.