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A steel wire of length 4.7 m and cross-...

A steel wire of length 4.7 m and cross-sectional area 3.0 `xx` `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 `xx 10^(-5)"m"^(2)` under a given load. What is the ratio of the ratio of the Young's modulus of steel to that of copper?

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