(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle of...

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(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle of 60° with the Earth's 5.50 x 10-5 T field. What is the current when the wire experiences a force of 7.00 x 10-3 N?

(b) If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75-T field, what force is exerted on this segment of wire?

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