f= 20.88


+18.1 x 10-6 C
+91
Find the net force on 9₁.
-11.2 x 10-6 C
92
0.280 m
0.350 m-
F₂ = force exerted on q1 by 92
→
F3 = force exerted on 9₁ by 93
F3 = N
[7=
Remember: Like charges repel;
opposite charges attract.
F₂ = [?] N
+5.67 x 10-6 C
+93
N