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In the a proton is projected horizontally midway two parallel plates that are separated by 0.50 cm. The electrical field due to the plates has magnitude 610,000 N/C between the the plates away from the edges. If the plates are 5.60 cm long find the minimum speed of the proton if it just misses the lower plate as it emerges from the field.(ep=1.60 x 10-19 C, epsilon 0=8.85 x 10-12 C2/N.m2 ,mel=1.67 x 10-27kg)

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