In the figure four particles form a square with edge length a-4.52x 102 m. The charges are q: 4-2.55 x 1015 Cand a What is q if the net electrostatic force on particle 1 is zero? (b) Is there any value of a that makes the net electrostatic force the four particles zero? a) Number b) No Units 4-4. (a) on each of
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