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$3.87 \times 10^4 \textrm{ N/C, diagonally away from the center}$

Giancoli 6th Edition, Chapter 16, Problem 34

(5:60)

Chapter 16, Problem 34 is solved.

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Comments

So k=8.988Nm^2/C^2?, not 8.988 x 10^9 Nm^2/C^2 ?

Thanks a lot robert, good eye! Yes, the video should show Coulomb's constant with times 10 to the nine. The final answer should still be correct since the final answer reflects using times 10 to the nine in the calculation. Thanks for spotting this, I've put revising this video on my to-do list.

Coulomb's constant has been corrected in this video.