Identical 8.0-$\mu$C point charges are positioned on the x axis at x = $\pm$1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?
A)84 mJ
B)54 mJ
C)96 mJ
D)63 mJ
E)48 mJ

Question

Quizplus · Accepted Answer

The potential energy of the system initially is converted into kinetic energy as the charges move apart. Using the formula for potential energy between two point charges and the conservation of energy, the initial potential energy is calculated and equated to the final kinetic energy. The correct calculation results in 96 mJ.

Identical 8 μ\muμ C Point Charges Are Positioned on the X Axis at X

Identical 8 $\mu$ C Point Charges Are Positioned on the X Axis at X