Two point charges are fixed on the y axis: a negative point charge q₁ = -31 ?C at y₁ = +0.19 m and a positive point charge q₂ at y₂ = +0.36 m. A third point charge q = +9.3 ?C is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 23 N and points in the +y direction. Determine the magnitude of q₂.

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