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Two wires, each having a weight per unit length of 1.00 ×10-4 N/ m, are parallel with one directly above the other. Assume the wires carry currents that are equal in magnitude and opposite in direction. The wires are 0.10 m apart, and the sum of the magnetic force and gravitational force on the upper wire is zero. Find the current in the wires. ( Neglect Earth's magnetic field.)

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