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AP Physics 2
12.2 Magnetism and Moving Charges
BeginnerMCQMathematical18.5k
A horizontal rectangular region representing a uniform magnetic field containing a grid of evenly spaced blue cross symbols indicating a field directed into the page, labeled B. A small red filled circle labeled alpha particle enters from the left border of the rectangle with a straight horizontal arrow pointing to the right, labeled v. The arrow starts at the center of the particle circle and extends to the right. No other labels, lines, text, or axes appear.
An alpha particle entering a uniform magnetic field.
An alpha particle (consisting of two protons and two neutrons) enters a region of uniform magnetic field of magnitude \(0.50\text{ T}\) with a speed of \(2.0 \times 10^6\text{ m/s}\). The velocity vector of the particle is perpendicular to the magnetic field lines. What is the magnitude of the magnetic force exerted on the alpha particle by the magnetic field?

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