An aluminum rod with a mass of 0.220 kg slides on parallel horizontal steel rails, 0.440 m apart, and carries a current of 15.0 A. The coefficient of friction between the rod and rails is 0.470. What vertical, uniform magnetic field is needed to keep the rod moving at a constant speed
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An aluminum rod with a mass of 0.220 kg slides on parallel horizontal steel rails, 0.440 m apart, an...
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