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An electron moves with velocity v⃗ =(6.5i−5.2j)×10^4m/sin a magnetic field B⃗ =(−0.87i+0.65j)T. Determine the z-component of...

An electron moves with velocity v⃗ =(6.5i−5.2j)×10^4m/sin a magnetic field B⃗ =(−0.87i+0.65j)T.

Determine the z-component of the force on the electron.

I don't know why I keep getting wrong for this question.

Can anyone explain how to solve this question?

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