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Physics 15 Online
OpenStudy (anonymous):

derive an expression for the work done in putting the four charges together as shown below

OpenStudy (anonymous):

|dw:1348178251421:dw|

OpenStudy (anonymous):

|dw:1348178242336:dw|

OpenStudy (anonymous):

#1 is free...

OpenStudy (anonymous):

#2 is -qV where V is kq/r so the work is -kq^2/a

OpenStudy (anonymous):

#3 is -kq^2/a + kq^2/(a*sqrt(2))

OpenStudy (anonymous):

see where this is going?

OpenStudy (anonymous):

im trying to figgy it

OpenStudy (anonymous):

|dw:1348178828104:dw|

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