Suppose you have two infinite straight line charges , a distance d apart, moving along at a constant speed v (Fig. 5.26). How great would

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Suppose you have two infinite straight line charges λ, a distance d apart, moving along at a constant speed v (Fig. 5.26). How great would v have to be in order for the magnetic attraction to balance the electrical repulsion? Work out the actual number... Is this a reasonable sort of speed?

2 2 d U U

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