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An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T.The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg.
(a)What is the radius of the path of the alpha particle?
(b)How long does it take the alpha particle to make one complete revolution around its path?
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