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I'd guess that you've seen the Wikipedia article on dielectric heating. If so, I think the article is potentially confusing when it says: Temperature is the average kinetic energy (energy of motion) of the atoms or molecules in a material This is true, but in solids the energy is in lattice vibrations. It is kinetic energy in the sense that the ...


We normally define work something along the lines of "force applied over a distance," but for the case of work done on a rotating object, it would be force applied over an arc-length. So, for some small amount of work $dW$, need to have a force at some distance form the center of rotation (actually a torque), $\tau$, which goes over some small angle, ...

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