A high-voltage power line carries a current of 110 A at a location where the Earth's magnetic
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A high-voltage power line carries a current of 110 A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 72° below the horizontal. Find the direction and magnitude of the magnetic force exerted on a 250-m length of wire if the current in the wire flows
(a) Horizontally toward the east
(b) Horizontally toward the south.
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