Coulomb's Law: The force of attraction that a -40.0 ?C point charge exerts on a +108 ?C point charge has magnitude 4.00 N. How far apart are these two charges? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A. 2.10 m
B. 3.67 m
C. 3.12 m
D. 2.49 m
E. 1.13 m
Answer: C
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