A 40-?C charge is positioned on the x axis at x = 4.0 cm. Where should a ?60-?C charge be placed to produce a net electric field of zero at the origin?
A. ?5.3 cm
B. 5.7 cm
C. 4.9 cm
D. ?6.0 cm
E. +6.0 cm
Answer: C
Physics & Space Science
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