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Two Q = +5.85 mC charges are placed at opposite corners of a square d = 1.2 m on each side, and -Q = -5.85 mC charges are placed at the remaining corners, as shown in the figure.
I labeled the square A, B, C, D from top left to bottem left.
Fba = k • QA • QB / dBA2
Fca = k • QA • QC / dCA2
Fda = k • QA • QD / dDA2
Fba= -.21365
Fca= .10683
Fda= -.21365
I used the pythagorean therum to find Fba+Fda, and got .302, and then i subracted .10683 from that, but that was not the correct answer.
Any suggestions?
I labeled the square A, B, C, D from top left to bottem left.
Fba = k • QA • QB / dBA2
Fca = k • QA • QC / dCA2
Fda = k • QA • QD / dDA2
Fba= -.21365
Fca= .10683
Fda= -.21365
I used the pythagorean therum to find Fba+Fda, and got .302, and then i subracted .10683 from that, but that was not the correct answer.
Any suggestions?