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A wire with a weight per unit length of 0.081 N/m is suspended directly above a...

A wire with a weight per unit length of 0.081 N/m is suspended directly above a second wire. The top wire carries a current of 30.1 A and the bottom wire carries a current of 60.9 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion.
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