Given:
Charge of the positive particle, $q = 40.5 \text{ mC} = 40.5 \times 10^{-3} \text{ C}$
Distance between the particles, $d = 3.02 \text{ mm} = 3.02 \times 10^{-3} \text{ m}$
Distance of point A from the midpoint along the y-axis, $y = 2.00 \text{ mm} = 2.00
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