All Questions
43
questions
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45
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What is the frequency of a standing wave? [closed]
I understand that constructive interference of waves results in standing waves. And for a wire with both ends fixed the frequency should match the fundamental frequency of the wire to produce standing ...
- 91
1
vote
1
answer
55
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String vibration dimensions
We're all familiar with the typical diagrams of standing waves of a string, as in this image from Wikipedia:
The thing that bothers me is that they ignore the reality that the string is vibrating in ...
- 11
1
vote
1
answer
96
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Change in Frequency while Tearing Paper
Let us assume you have a 30cm strip of paper, and you tear it lengthwise. Let us abbreviate the frequency produced when you reach the end of the paper as $f_2$ and the frequency of sound heard when ...
0
votes
2
answers
96
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How does a string thickness affect the frequency of its harmonics?
The harmonics of a theoretically infinitely small diameter string are pure integer multiples of the fundamental frequency. However, a real string has a thickness, and when vibrating in a harmonic, the ...
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0
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66
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What is heard when a tuning fork is struck?
When a tuning fork is struck I hear two tones. From a distance I can hear a high octave frequency of the pitch of the tuning fork. Though, if I listen to it closely (closer to my ears), I also hear a ...
- 109
1
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2
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108
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Can a pendulum have detectable harmonic frequencies
Can a pendulum produce harmonic frequencies? Like could I detect harmonic frequencies if I had a sensor on the pendulum?
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3
votes
2
answers
73
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In what respect does the wave pattern of a noise and music differ?
Does the wave pattern of musical sounds contain only harmonics (other than the fundamental frequency) while noise contains random overtones (that are not harmonics)?
- 1,064
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1
answer
65
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How to calculate the overall harmonics of a system of tubes?
Let's say there is a tube closed at one and and open from the other. The open end is connected to another tube (of smaller diameter) which is open from both ends. How can I calculate the overall ...
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2
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283
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Question about fundamental frequencies
For a string fixed at both ends, with a fundamental frequency of 440Hz, can there be a harmonic when a wave of frequency 220Hz is sent across the string? my book says no, but I disagree; can't ...
- 323
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1
answer
36
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Find the frequency of the first two harmonics of a vibrating string
I have a string of length $2 \;\text{m}$ and the wave velocity is $120 \;\text{m/s}$, find the frequency of the first two harmonics.
My attempt, what I must do is to solve the wave equation on the ...
user279760
4
votes
0
answers
85
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Identifying speech sounds from sound waves [duplicate]
TLDR: How do we differentiate, say, a "A" from a "O", how do we identify speech sounds? If formants are the key, how is it possible to identify it regardless of the pitch (...
- 1,013
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1
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149
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Why can harmonics be a different note than their fundamental frequency?
I was under the impression for the longest time that when you hear a harmonic on a string, its basically a sum of different resonating frequencies, which are all INTEGER multiples of the base ...
- 2,989
3
votes
1
answer
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Why do higher frequencies tend to have a smaller amplitude than low frequencies?
Complex waves found in nature tend to have downward sloping frequency distribution. This isn't to say the fundamental always has the highest level but the general trend is that higher overtones tend ...
1
vote
2
answers
599
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During sympathetic resonance in a piano, are new frequencies generated?
Sympathetic resonance in a piano is the phenomenon of one string being excited, transmitting its sound to other strings that will then start vibrating if they have common frequencies.
For example C2 ...
- 3,236
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2
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66
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Waves and guitar frets
I have a problem to solve for Physics III at university and I can't seem to understand how to solve this question.
I have the fundamental frequency at $440$ Hz, $L=1$ m, and $ρ=0.002$ kg/m.
After ...
