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Physics 20 Online
OpenStudy (anonymous):

Hi, can someone pls explain to me how to find both magnitude & direction for this question? There are 3 charges Q1 (2 x 10^-8 C), Q2 (3 x 10^-8 C) and Q3 (-4 x 10^-8 C). What is the electric field strength due to Q2 and Q3 at the position of Q1 if they are arranged horizontally next to each other with Q2 10 cm to the left of Q1and Q3 20 cm to the right of Q1? Thx

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