Two unknown charges are shown on the screen along with vectors representing
the net force on each charge. If you hold the mouse down on the charge you
see its x and y position along with the magnitude of the force on it caused
by the other particle and you can move the charges around.
Drag the charges around with the mouse and note the magnitude and direction of the force at various locations.
Is there any way to tell from this simulation which charge is positive and which is negative? Explain.
Is there any way to tell from this simulation which charge has the larger magnitude? Explain.