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Three charges, +2.5 uc , -4.8 uc , and -6.3 uc are located at (-0.2 m,...

Three charges, +2.5 uc , -4.8 uc , and -6.3 uc are located at (-0.2 m, 0.15 m), (0.50 m, -0.35 m), and (-0.42 m, -0.32 m), respectively. What is the electric field at the origin?

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