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CP At time t = 0 a proton is a distance of 0.360 m from a very large insulating sheet of charge and is moving parallel to the sheet with speed 9.70 × 102 m/s. The sheet has uniform surface charge density 2.34 × 10−9C/m2. What is the speed of the proton at t = 5.00 × 10−8 s?
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