Question: The figure is a cross section through three long wires with linear mass density 5 6 . 0 g / mg / m . They

The figure is a cross section through three long wires with linear mass density 56.0 g/mg/m. They each carry equal currents in the directions shown. The lower two wires are 4.0 cm apart and are attached to a table. (Figure 1) What current II will allow the upper wire to "float" so as to form an equilateral triangle with the lower wires?

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