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A small object with mass m, charge q, and initial speed v0=5.00 ×10^3 m / s is projected into a uniform electric field between two parallel metal plates of length 26.0 cm (Fig. P 21.78 ). The electric field between the plates is directed downward and has magnitude E=800 N / C. Assume that the field is zero outside the region between the plates. The separation between the plates is large enough for the object to pass between the plates without hitting the lower plate. After passing through the
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