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A steel rod has a radius of 20 mm and a ...

A steel rod has a radius of 20 mm and a length of 2.0 m. A force of 62.8 kN stretches it along its length. Young's modulus of steel is `2.0 times10^(11) N/m^2 `. The longitudinal strain produced in the wire is _____ `times10^(–5)`

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