C Cherry Guest Mar 18, 2009 #1 Two objects repel each other. Can we be sure they are both electrically charged? Two objects attract each other. Can we be sure both are electrically charged? Can we be sure one is electrically charged?
Two objects repel each other. Can we be sure they are both electrically charged? Two objects attract each other. Can we be sure both are electrically charged? Can we be sure one is electrically charged?
