A proton is moving under the combined influence of an elec- tric field (B = 1255...
A alpha particle is moving under the combined influence of an electric field (E = 1200. V/m) and a magnetic field (B = 1.40 T), as shown in the figure, a) What is the of the alpha particle at the instant it enters the crossed fields? b) What would the acceleration if the direction of the alpha particle's motion were reversed?