Homework Answers
Answer : F3 on 2 = 18.0 N
If r is the dtc between the 2 charges, force of attraction is
F = kq1q2/r^2
F1-2 = kq1q2/r12^2
F3-2 = kq3q2/r32^2
q3 = 8q1
and r32 = 2r12
from the above we get F3-2 = 18 N
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