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August 30, 2015

Homework Help: Physics!! Help!!!!!

Posted by Melissa on Wednesday, February 15, 2012 at 1:07am.

A wire of length L and cross-sectional area A has resistance R. What will be the resistance R_stretched of the wire if it is stretched to twice its original length? Assume that the density and resistivity of the material do not change when the wire is stretched.
Express your answer in terms of the wire's original resistance R.

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