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EvaBugs

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I am currently working on this problem:

"An electron moves in the X-Y plane with a velocity v = (5 *10^5 m/s , 30 degrees). The uniform magnetic field i the region is B= ( 6 i - 2 j + 1 k ). Find the resultant magnetic force on the electron in component form."

I know that F = qv x B = qvB sin (teta)

What mixes me up is the fact that B has 3 components. How should I begin?