Physics question??? Help please!!

Posted on 2015-09-10 06:18:00 in Physics by ARDINA

There are three point charges lying at the vertices of an equilateral triangle with side 0.01m. Charges #2 and #3 create an electric dipole. #1 = +1?q, #2 = +1?q, #3 = -1?q.

1) What is the net electric force that the dipole exerts on charge #1.
2) What is the potential energy of the charge system.

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