An equilateral triangle has sides of 0.17 m. Charges of -9.0, +8.0, and +2.2 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 2.2-µC charge.

Answer 1

Add as vectors the forces due to the charges at the opposite corners. This requires a knowledge of Coulomb's law and how to add vectors. I assume you are familiar with both.

Answer 2

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Answer 3

10 years later.