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Statement of a problem № 2794

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When two tuning forks are sounded simultaneously, they produce one beat every 0.30 s. (a) By how much do their frequencies differ? (b) A tiny piece of chewing gum is placed on a prong of one fork. Now there is one beat every 0.40 s. Was this tuning fork the lower- or the higher-frequency fork?

Solution:
When two tuning forks are sounded simultaneously, they produce one beat every 0.

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