The length of the railway line between cities A and B is 30 km. 3001 rails of equal length are laid with 300 equal gaps between them. The minimum and maximum temperatures are 25∘C and 40∘C during winter and summer respectively. If α of iron is 12×10−6 ∘C−1, find how much gap is to be left between adjacent rails?

The length of the railway line between cities A and B is 30 km. 3001 r

1.	The length of the railway line between cities A and B is 30 km. 3001 rails of equal length are laid with 300 equal gaps between them. The minimum and maximum temperatures are 25∘C and 40∘C during winter and summer respectively. If α of iron is 12×10−6 ∘C−1, find how much gap is to be left between adjacent rails?
Answer» The length of the railway line between cities A and B is 30 km. 3001 rails of equal length are laid with 300 equal gaps between them. The minimum and maximum temperatures are $25^{\circ} C$ and $40^{\circ} C$ during winter and summer respectively. If $α$ of iron is $12 \times 10^{- 6}^{\circ} C^{- 1}$ , find how much gap is to be left between adjacent rails?

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