(a) An electron gun has parallel plates separated by 4.00 cm and gives electrons 25.0 keV of energy. What is the electric field strength between the plates?                                                                                                                (b) What force would this field exert on a piece of plastic with a 0.500 μC charge that gets between the plates?

University Physics Volume 2
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Chapter7: Electric Potential
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Problem 81P: A double charged ion is accelerated to an energy of 32.0 keV by the electric field between two...
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(a) An electron gun has parallel plates separated by 4.00 cm and gives electrons 25.0 keV of energy. What is the electric field strength between the plates?                                                                                                                (b) What force would this field exert on a piece of plastic with a 0.500 μC charge that gets between the plates?

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