Solving a problem in physics section 71 point 61 electr

Solving a problem in physics section 71 point 61 electr

61. Positive charges of 3 · 10−7 C and 6 · 10−5 C are in vacuum at a distance of 3 m from each other. What work is done by the field when the charges approach each other to a distance of 0.5 m?

Additional information:

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