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A negative charge of q = -2.2 * 10-17 C and m = 2.3 * 10-26 kg enters a magnetic field B = 1.9 T with initial velocity v = 270 m/s as shown in the attached image. The magnetic field points into the screen.
Express the radius R, of the circular motion in terms of the centripetal acceleration a and the speed v.
Calculate the numerical value of the radius R in meters.
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