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A beam of electrons traveling horizontally with an initial speed of vi = 3.0 x 107...

A beam of electrons traveling horizontally with an initial speed of vi = 3.0 x 107 m/s enters a uniform, vertically upward electric field with magnitude E = 2.0 x 104 N/C between the deflection plates of an oscilloscope, as shown in the figure. The initial velocity of the electrons is perpendicular to the field. The plates are d = 4.0 cm long. Ignoring all forces apart from the electrostatic interactions, calculate the magnitude and direction of the velocity of the electrons after passing though the plates.

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