# Physics homework help

I need help with physics...I don't want answers...that's for cheaters, and can retrieve the answers...I need help understand how the answer came to be. The book I'm using is giancoli, I'm on chapter 16 Electric Charge and Electric Field. I have a square with both + and - charges of 6.00mC on opposite corners and the distance between the charges is .100m, how do I solve this I tried using an example in the book but my answer did not match up....help!

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