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9. Three point-like charges are placed at the following points on the x-y system coordinates (q1 is fixed at x = -3.00 cm, q2 is
fixed at y = +1.00 cm, and q3 is fixed at x = +1.00 cm. Find the electric potential energy of the charge q1. Let q1 = -3.20 µC, q2
= +3.10 µC, and q3 = +3.70 µC.
y(cm)
+3
+2
+1
-1
-1
+2
+3
-2
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