Assume there are four charges: \( q_1 \) on the positive \( x \)-axis, \( q_2 \) on the negative \( x \)-axis, \( q_3 \) on the positive \( y \)-axis, and \( q_4 \) on the negative \( y \)-axis. Each charge is at a distance of 5.1 cm from the origin.
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