A particle (mass = 6.0 mg) moves with a speed of 4.0 km/s in a direction that makes an angle of 37° above the positive x axis in the xy plane. At the instant it enters a magnetic field of (5.0
) mT it experiences an acceleration of (8.0
) m/s2. What is the charge of the particle?
A. ?4.8 ?C
B. 4.0 ?C
C. ?4.0 ?C
D. 4.8 ?C
E. ?5.0 ?C
Answer: C
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