# Steel wire

A steel wire of length $$4.7\ m$$ and cross sectional area $$3.0 \times 10^{-5}\ m^2$$ stretches by the same amount as a copper wire of length $$3.5\ m$$ and cross sectional area of $$4.0 \times 10^{-5} \ m^2$$ under a given load. What is the ratio of the Young's modulus of steel to that of copper?

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