- #1
aub
- 21
- 0
Homework Statement
At 20° C, a rod is exactly 20.05 cm long on a steel ruler. Both the rod and the ruler are placed in an over at 250° C, where the rod now measure 20.11 cm on the same ruler. What is the coefficient of linear expansion for he material of which the rod is made?
Homework Equations
ΔL = αLiΔT
ΔL= change in length
α= coefficient of linear expansion
ΔT= change in temperature
The Attempt at a Solution
i can only think of one way (ΔT[rod]=ΔT[ruler]) in which i need α of the material of the ruler so it wrong. anyone can give me a hint?