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There are 2 equal coaxial coils of radius 50 cm and they are on top of...

There are 2 equal coaxial coils of radius 50 cm and they are on top of each other, separated by a 9 mm gap. The lower coil is on a flat table and conducts an "i" current in a clockwise direction, and the upper coil conducts an equal current and has a mass of 150 gr. Find the magnitude and direction the current from the upper coil must have to stay suspended above the lower coil.

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