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At 25 degree celsius, an iron is 1.20m in length. At what temp. will its length increased by 0.70% ?
This is a heat and temperature application problem.
Please do elaborate the solutions.
-extended thanks.
λ*(T-25) = .007 where λ = coefficient of expansion/C°
Solve this eq for T and you will have the answer.
Note that since the increase is given in %, you don't need to know the actual length.
