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[" Q.7A composite wire of diameter 1"cm"...

[" Q.7A composite wire of diameter 1"cm" consisting of copper and steel wire of lengths "2.2m" and "2.0],[" A composite wire of diameter "1cm" consisting of copper and steel wire of lengths "2.2m" and "2.0],[" m respectivelly.Total extension of the wire,when streched by a force is "1.2mm" .Calculate the "],[" force given that Young's modulus for copper is "1.1times10^(11)Pa" and for steel is "2.0times10^(11)Pa" ."]

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