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week1 (dragged) 15 - Same charges repel opposite attract...

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7 Electric Charge: experimental facts ! Experiment: objects can repel/attract each other. ! Electric force. ! Electric force between two objects is proportional to their charges (concept of a charge is introduced) ! Two types of charges: “positive” and “negative”
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Unformatted text preview: ! Same charges repel, opposite attract. ! Value of a charge does not depend on motion ! Value of a charge changes discontinuously: charge is quantized. ! In a closed system charge is conserved Thursday, August 26, 2010...
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