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Q. Two large, parallel, conducting plates are 26cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 2.8 x10-15 N acts on an electron placed anywhere between two plates.

Q. A stationary radar operator determines that a ship is 15km south of him. An hour later the same ship is 24km southeast. If the ship moved at constant velocity and always in the same direction, what was its velocity all through this time? (Hint: Take the origin to be the location of the radar.)

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