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Problem 23.8: Find the unknown charge

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Aの電荷は1 nC = 1x10-9 C,Bの電荷は -3 nCである. (単位は,長さがm,電場が N/C). Restart.

  1. 移動できる電荷をどこに置けば原点(黒丸)の電場が0になるか?
  2. 移動できる電荷の大きさは?

Problem authored by Anne J. Cox.

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