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Those waves behave like those found, for example, in a lake. For instance, noise is jackhammers echoing through a corridor of buildings while vehicles honk their horns randomly. That's especially true when a second sound wave has, for instance, twice the frequency of the first. Strike a tuning fork and it will produce a single, pure tone because it vibrates at just one pure frequency. All objects, when struck or strummed, have a pure frequency (or frequencies) that they produce. A wave's frequency mainly simply indicates how quickly or slowly a medium vibrates as a sound wave passes by way…