6)^2} \right) \]
where:
\( k \) = Coulomb's constant = \( 8.99 \times 10^9 \, Nm^2/C^2 \)
\( q_1 = 1.5 \times 10^{-6} \, C \) (charge at the origin)
\( q_2 = -2.5 \times 10^{-6} \, C \) (charge at x = 0.6m)
\( x \) = distance from the origin to the point on the
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