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Physics 9 Online
OpenStudy (anonymous):

please help me ! solve this : exercise 3 :

OpenStudy (anonymous):

|dw:1356891393684:dw| q1=+4x10^-6, q2=+2.0x10^-6, q3=-3x10^-6 Find the Electric Potential Energy for the array of the charge shown in figure.

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