Three charged particles (red, green and blue) are placed at initial positions on the
screen. When you click on start, the three particles exert a force on the black test
charge at the center of the screen. The purple test charge moves under the effects of the
Coulomb force. You can move the three charges by click-dragging them. Reposition the three
charges to make the test charge go through the goal on the left without touching either
side of the goal. Report your success and the time that it took you to accomplish your
goal. Start