Two point charges are placed on the x axis. The first charge, q_1 = 8.00 nC, is

Question

Two point charges are placed on the x axis. The first charge, q_1 = 8.00 nC, is placed a distance 16.0 m from the origin along the positive x axis; the second charge, q_2 = 6.00 nC, is placed a distance 9.00 m from the origin along the negative x axis. Calculate the electric field at point A, located at coordinates (0m, 12.0 m).

E_Ax, E_ Ay=0,0.300 N/C
Correct

I need help in Part B

Part B) An unknown additional charge q_3 is now placed at point B, located at coordinates (0 m, 15.0 m).
Find the magnitude and sign of q_3 needed to make the total electric field at point A equal to zero.

Express your answer in nanocoulombs to three significant figures

Explanation / Answer

0,.300

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