I've got asked by someone who just graduated school and is about to start studying physics, what exactly is an electron, if it is not "a small ball rotating around the core of an atom". I couldn't really break it down for him though, i guess he didn't understand my explanation. Do you have an explanation in "easy words" that is still physically correct?
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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?
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