What is the magnitude of the magnetic force on a charged particle (Q = 5.0 ?C) moving with a speed of 80 km/s in the positive x direction at a point where Bx = 5.0 T, By = ?4.0 T, and Bz = 3.0 T?
A. 2.8 N
B. 1.6 N
C. 1.2 N
D. 2.0 N
E. 0.4 N
Answer: D
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