Two equal and unmoving charges, Q ₁ = + 1.20 mC and Q ₂ = +1.20 mC, are fixed symmetrically along the x-axis at x = ± 3.00 cm. Consider a third charge Q ₃ = + 3.75 mC with a mass of m = 10.0 mg moving along the y-axis. If Q ₃ starts from rest at a position of y = 3.0 cm, what is its speed when it reaches y = 7.00 cm?

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