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In the figure four particles form a square with edge length a = 4.54 × 10-2...

In the figure four particles form a square with edge length a = 4.54 × 10-2 m. The charges are q1 = q4 = 2.20 × 10-15 C and q2 = q3 = q. (a) What is q if the net electrostatic force on particle 1 is zero? (b) Is there any value of q that makes the net electrostatic force on each of the four particles zero? Choose the answer for part (b) from the menu in accordance to the question statement

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