Question at 17degc a rod is exactly 1891 cm long on a steel, Ask an Expert

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Question: At 17°C, a rod is exactly 18.91 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 240°C, where the rod now measures 19.18 cm on the same ruler.

Part A: What is the coefficient of thermal expansion for the material of which the rod is made? The linear expansion coefficient of steel is 11 x 10^-6 1/C°

I need help to find the coefficient of thermal expansion for the material of which the rod is made.

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