A source injects an electron of speed v ! 1.5 $ 107 m/s
Chapter , Problem 32(choose chapter or problem)
A source injects an electron of speed v ! 1.5 $ 107 m/s into a uniform magnetic field of magnitude B ! 1.0 $ 10%3 T. The velocity of the electron makes an angle u ! 10 with the direction of the magnetic field. Find the distance d from the point of injection at which the electron next crosses the field line that passes through the injection point.
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