P29_057 - m . By the right-hand rule, the magnetic force...

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57. Since the velocity is constant, the net force on the proton vanishes. Using Eq. 29-2 and Eq. 23-28, we obtain the requirement (Eq. 29-7) for the proton’s speed in terms of the crossed Felds: v = E B = E =(50m / s)(0 . 0020 T) = 0 . 10 V /
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Unformatted text preview: m . By the right-hand rule, the magnetic force points in the k direction. To cancel this, the electric force must be in the k direction. Since q > 0 for the proton, we conclude ~ E = . 10 V / m k....
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