Solving a problem in physics section 73 point 61 electr

Solving a problem in physics section 73 point 61 electr

61. Three identical point negative charges q = −10 µC are located at the vertices of an equilateral triangle. What charge should be placed in the center of the triangle so that the entire charge system is in equilibrium?

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)