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Calculate the magnitude of the force per meter pushing two straight wires in an extension chord apart when 1 A of DC current lights a 100W study lamp. The separation of the wires is 2mm, and the insulation behaves like a vacuum. Again, I don't know how I can do this without knowing he length.

  • physics - urgent -

    okay, I've tried doing this one several different ways and it still doesn't work out... :(

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