An electron is moving at a speed of 5.1 × 106 m/s at an angle of 23° with respect to a uniform magnetic field of 7.3 × 10-4 T.What is the radius of the resulting helical path? (me = 9.11 × 10-31 kg,qe = 1.6 × 10-19 C)
A) 3.7 cm
B) 4.0 cm
C) 3.2 cm
D) 1.6 cm
E) 3.4 cm
Correct Answer:
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