Two particles, each having a mass of 3.0 ?g and having equal but opposite charges of magnitude of 6.0 nC, are released simultaneously from rest when they are a very large distance apart. What distance separates the two at the instant when each has a speed of 5.0 m/s?
A. 4.3 mm
B. 8.6 mm
C. 7.3 mm
D. 5.6 mm
E. 2.2 mm
Answer: A
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