Three charged particles are located at the corners of an equilateral triangle. C

Question

Three charged particles are located at the corners of an equilateral triangle. Charge A = 2nC, Charge B = 7nC and charge C = -4nC. a) Calculate the total electric force on the 7nC charge. b) Then calculate the electric field on the 7nC charge using the answer to (a).

https://media.cheggcdn.com/media/45d/45d6f31d-81d2-4c1a-939b-682a1fe20e90/phpjG7FYy.png

Please be detailed. Im having issues figuring out why and when some of the components are negative, and how to use the formula F=qE to interchange between Electric Force and Electric Field. My answers just doesnt match. I have a test monday and I cant figure this out. Thanks!

Explanation / Answer

Three point charges are located at the corners of an equilateral triangle as shown in Figure P23.7. Calculate the net electric force on the 7.00?

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