Answer to Question #272445 in Physics for Cheppie

Question #272445

Given that the potential energy of a pair of atoms in a solid is raised by 1 eV when their

separation is changed by 1Å, calculate the macroscopic elastic modulus of the lattice.

Expert's answer

The elastic modulus is

"k=\\frac{2E}{x^2}=2\\text{ eV\/\u00c5}^2."

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