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Q. A man weighing 650 and a woman weighing 440 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman ?

Q. An electron (mass m = 9.11 x10-31 kg) is accelerated in the uniform field E (E = 1.95 x10^4 N/C) between two parallel charged plates. The separation of the plates is 1.20 cm. The electron is accelerated from rest near the negative plate and passes through a tiny hole in the positive plate, With what speed does it leave the hole?

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