If a violin string vibrates at 390 Hz as its fundamental frequency, what are the frequencies of the first four harmonics?
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The fundamental frequency
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Find the first four harmonics.
\A harmonic of a wave is a component frequency of the signal that is an integer multiple of the fundamental frequency.
\The first harmonic is 
The second harmonic is 
The third harmonic is 
The fourth harmonic is 
First four harmonics are 390 Hz, 780 Hz, 1.17 Hz and 1.56 Hz.