# physics

The electrons in a TV tube are accelerated from rest through a potential difference of 18kV. Esimate the speed of the electrons after they have been accelerated by this potential difference.

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1. energy=potenial *charge

energy also is 1/2 m v^2

you know potential, mass of electron, and charge on an electron. Solve for velocity

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2. 79515.55

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posted by Diana

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