Solving a problem in physics section 59 paragraph 82 el

Solving a problem in physics section 59 paragraph 82 el

82. The two like-charged infinitely long parallel filaments with the same linear density of charge 18 SCLC / m in a vacuum at a distance of 83 mm from each other. What kind of work per unit length needed to make in order to bring together these threads up to a distance of 17 mm?

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)