Solving a problem in physics section 75 point 74 electr

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74. On silk threads with a length of l = 50 cm each, two identical balls weighing m = 0.16 g each, hanging in contact with each other. After the balls were informed of equal charges of the same name, they dispersed to a distance of 4 cm. Determine the charges of the balls
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)