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An electron at rest in a vacuum is accelerated by a momentary electric field E =...

An electron at rest in a vacuum is accelerated by a momentary electric field E = 438 V/m y for 325 microseconds*. Then it enters a magnetic field of B = 257 microTesla* x. Determine the direction of the initial force that the electron feels when it enters the magnetic field.

* refers to the units of time and magnetic field. Bold in 'x' and 'y' refers to the axis/direction.

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