7. A particle with a mass of 1.0 × 10-3 g and charge of +1.0 μC is released from rest at one vertical plate of a capacitor as illustrated. If the electric field between the plates is 100 V/m, how far does the particle drop before it hits the second plate?
(A) 0.49
(B) 0.98
(C) 1.96
(D) 4.9
(E) 9.8 cm

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