This physics video tutorial provides a basic introduction into beat frequency. It explains how to calculate the beat frequency of two tuning forks vibrating next to each other. it explains how to measure the two possible frequencies of a tuning fork based on the single beat frequency that it produces. it also discusses how to find the exact sound frequency of a tuning fork by measuring the beat frequency producing from the tuning fork with two other different sound waves. This video contains plenty of examples and physics practice problems.
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