The charges are located at:
- \( x = 0 \) m with charge \( q_1 = -40 \) nC
- \( x = 0.50 \) m with charge \( q_2 = 5.0 \) nC
- \( x = 1.30 \) m with charge \( q_3 = 3.0 \) nC
The point where the electric field needs to be calculated is at \( x = 3.1 \) m, \( y =
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