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Four charges are located as follows: Q1 = 5.00 nC at (-6, 0) m, Q2 =...

Four charges are located as follows: Q1 = 5.00 nC at (-6, 0) m, Q2 = 5.00 nC at (6,0) m, Q3 = -4.00 nC at (-3,4) m, and Q4 = -4.00 nC at (3,4) m. Calculate:

(a) Electric field at the origin (magnitude and direction);

(b) Electric potential at the origin;

(c) The total potential energy of the system. Is this an energetically favorable arrangement?

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