Coulomb's law for point charges::
d = 2.00 cm(1m/100cm) = 0.02 m
Assume the third charge is located between the two charges such that:
r13 = (d - x) m
r23 = x m
q1 = q = 2.00 nC(10-9C/1nC) = 2.00 × 10-9 C
q2 = 4q = 8.00 nC(10-9C/1nC) = 8.00 × 10-9 C
q3 = q = 2.00 nC(10-9C/1nC) = 2.00 × 10-9 C
We are told that F13 = F23:
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