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Solution Library
Calculate Direction Of Net Force On Charges With Velocities In Uniform Magnetic Field
Question
Charges Q1 > 0 and Q2 < 0 have velocities in the plane of the page. A uniform magnetic field with magnitude B is going into the plane of the page, and a uniform electric field with magnitude E is going up (towards the top of the page). I the speed of charge 1 satisfies v1 > E/B and the speed of charge 2 satisfies v2 < E/B, what is the direction of the net force on charges 1 and 2? (Up means towards the top of the page, and down means toward the bottom of the page.)
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