What is the distance between a -2.00 $\mu$C charge and a -3.00 $\mu$C charge if their potential energy is 0.491 J?

Question

Quizplus · Accepted Answer

The potential energy $ U $ between two point charges is given by $ U = \frac{k \cdot |q_1 \cdot q_2|}{r} $, where $ k $ is Coulomb's constant ($ 8.99 \times 10^9 \, \text{N m}^2/\text{C}^2 $), $ q_1 $ and $ q_2 $ are the charges, and $ r $ is the distance between them. Solving for $ r $ with the given values, $ r = \frac{k \cdot |q_1 \cdot q_2|}{U} $, results in approximately 0.11 m or 11.0 cm.

What Is the Distance Between a -2 μ\muμ C Charge and a -3

What Is the Distance Between a -2 $\mu$ C Charge and a -3