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OpenStudy (anonymous):
Two tuning forks are played at the same time. One has a frequency of 490 Hz and the other is 488 Hz. How many beats per second are heard? 490 488 2 4
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OpenStudy (anonymous):
If the second harmonic of a certain string is 42 Hz, what is the fundamental frequency of the string? 21 Hz 42 Hz 84 Hz 126 Hz
OpenStudy (sidsiddhartha):
beats per second are heard=(490-488)=2 hz
OpenStudy (sidsiddhartha):
fundamental freq=42/2=21 hz
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