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seen Mar 25 at 16:24

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asked Is this a correct description of bonding in a metal?
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revised What is the approximate electrical conductivity $\sigma$ of graphene in S/m or S/cm?
improved formatting
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suggested suggested edit on What is the approximate electrical conductivity $\sigma$ of graphene in S/m or S/cm?
May
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accepted How do I integrate the Poisson equation to determine the electric potential along a particular direction (e.g., $z$)?
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accepted What are the differences between the terms flammable, inflammable, and non-flammable?
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accepted In the Lennard-Jones potential, why does the attractive part (dispersion) have an $r^{-6}$ dependence?
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asked Is there a typo in this modified Lennard-Jones potential?
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comment In the Lennard-Jones potential, why does the attractive part (dispersion) have an $r^{-6}$ dependence?
@JohnRennie OK, thanks. I was thinking that the derivation would involve a dipole-dipole interaction, but I guess it is more complicated than that.
May
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asked In the Lennard-Jones potential, why does the attractive part (dispersion) have an $r^{-6}$ dependence?
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asked Deriving the change in the Helmholtz free energy in the context of the free energy perturbation method
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comment The number of degrees of freedom of a monatomic gas
Thanks for your time. What if the center of mass is not at rest? Then would the system have $3N - 3$ degrees of freedom instead of $3N$?