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Three charges, q1 = +2.5 μC, q2 = -3.6 μC, and q3 = -5.0 μC, are...

Three charges, q1 = +2.5 μC, q2 = -3.6 μC, and q3 = -5.0 μC, are located at the corners of an equilateral triangle with sides of length 0.5 m centered at the origin. The corner locations are at (-0.250 m, -0.145 m), (+0.250 m, -0.145 m), and (0 m,+0.290 m) respectively.

Part 1: What is the magnitude of the net ELECTRIC FORCE on the +2.5 μC charge?

Part 2: Which of the following is a correct expression for the net ELECTRIC FIELD at the center of the triangle (the origin)? Here, r1, r2, and r3 stand for the distances from the origin to each charge.

  

  

  

  

  

  

Part 3: What is the net ELECTRIC FIELD at the center of the triangle?

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