1. What is the charge Q₂ if the potential at the dot is 3.7110³ V? The charge on Q₁ is 3.00 nC and the charge on Q₃ is -9.00 nC. The distance between Q₁ and Q₂ is 5.00 cm. The distance between Q₂ and Q₃ is 2.00 cm.

The charge is:

\fQ3 Q2 - + + Q1Z Charge Q Point on axis + + + + + + + + X