Wednesday, April 10, 2019

electrostatics - Why don't free electrons escape from a conductor?


The thermal velocity of the free electron in a metallic conductor varies from $10^5\ \mathrm{m/s}$ to $10^6\ \mathrm{m/s}$. In spite of high velocity, free electrons fail to escape from the metallic surface. Why is that?





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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

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