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# Problem: A -3 μC point charge and a -9 μC point charge are initially extremely far apart. How much work does it take to bring the -3 μC charge to x = 3 mm, y = 0 mm and the -9 μC charge to x = -3 mm and y = 0 mm? a. 40 J b. 81 J c. 27 J d. 6.8 J

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###### Problem Details

A -3 μC point charge and a -9 μC point charge are initially extremely far apart. How much work does it take to bring the -3 μC charge to x = 3 mm, y = 0 mm and the -9 μC charge to x = -3 mm and y = 0 mm?

a. 40 J

b. 81 J

c. 27 J

d. 6.8 J

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Based on our data, we think this problem is relevant for Professor Rodriguez Gutierrez's class at USF.