week4 (dragged) 43

week4 (dragged) 43 - d 23 Thursday, September 16, 2010

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! Total energy: U tot = q 1 V 1 + q 2 V 2 + q 3 V 3 (?) U tot = q 1 V 1 + q 2 V 2 + q 3 V 3 = q 1 k ° q 2 d 12 + q 3 d 13 ± + q 2 k ° q 1 d 12 + q 3 d 23 ± + q 3 k ° q 1 d 13 + q 3 d 23 ± =2 k ° q 1 q 2 d 12 + q 1 q 3 d 13 + q 2 q 3
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