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An "e" tuning fork with a frequency of 329 hz is used to test the "e" note of a piano. four beats are heard. this means
the piano key is in tune.
the piano key is out of tune and has a frequency of 333 hz.
the piano key is out of tune and has a frequency of 325 hz.
the piano key is out of tune and has a frequency of either 325 or 333 hz
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An "e" tuning fork with a frequency of 329 hz is used to test the "e" note of a piano. four beats ar...
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