A proton, with a velocity of 3.4 x 106 m/s. enters a magnetic field perpendicular to the field lines. The magnetic field has an i ntensity equal to 7.7 x 10-2 T. Calculate the radius of the circumference described by the proton. Proton mass = 1.67 x 10-27 kg. Proton charge 1.6 × 10-¹⁹ C 2.3 m 0.46 m 4.6 m 0.23 m
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