Tone produced in a partially filled bottle

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SUMMARY

The discussion centers on the acoustic phenomenon of tone production in a partially filled bottle. When water is consumed from the bottle, the length of the air column increases, resulting in a lower frequency of the emitted tone. The relevant equation for this scenario is f = (2n-1)v / (4L), where 'f' represents frequency, 'v' is the speed of sound, and 'L' is the length of the air column. Thus, drinking water alters the fundamental frequency, producing a different tone.

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Homework Statement


A tone will be produced when blowing air to partially filled bottle. What will be the new frequency after drinking some water in the bottle and repeating the same experiment, ?
a. Higher than before
b. Less than before
c. same as before
d. impossible to tell

Homework Equations


f = (2n-1)v / (4L)

The Attempt at a Solution


Drinking some water will make the length of air column increases. For the same tone (assume maybe fundamental frequency) and constant value of v (speed of sound), the frequency will be lower?

Thanks
 
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songoku said:
For the same tone (assume maybe fundamental frequency) and constant value of v (speed of sound), the frequency will be lower?
Yes, but do not refer to that as being the same tone. The tone of an instrument is the sound emitted, consisting of a particular fundamental frequency and the various harmonics. Different fundamental, different tone.
 
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Oh ok. Thank you very much
 

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