Tagged Questions
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1answer
53 views
The second resonance of string?
What is the relationship between "the second resonance " and string and the wavelength. Like in this question: if the length of the string is 2cm with second resonance, then what is wavelength?
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1answer
63 views
Phase shift of resonance
For resonance to occur, is it true that the force lags behind the motion by $\pi/2$? I saw some notes written that the motion lags behind the force by $\pi/2$ which makes no sense to me.
As I watched ...
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1answer
270 views
How would natural (resonant) frequencies affect amplitudes?
I read $y=A\sin(2\pi ft)$, where $A$=Amplitude, $f$=Frequency, $t$=Time and $y$=$Y$ position of the wave.
Since natural frequencies only take the most effect when they are close to the frequency.
How ...
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1answer
65 views
What is the name for the whistling “musical” sounds that change stepwise in pitch when a hollow tube is spun like a lasso?
You have likely heard those sounds, science museums sometimes sell Flexible plastic tubes you can whirl like a lasso. The air rushing by the end of the tube causes these sounds, which are admitted in ...
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1answer
459 views
Science behind the singing wine glass
A wine glass filled with water (approximately half or a quarter), when you use a wet finger and rub the top of the wine glass, the wine glass will produce a sound. I heard that it is because of the ...
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2answers
96 views
Sound “exploding” in car's window at certain speed [duplicate]
Possible Duplicate:
Why, when one opens 1 car window, does that noise occur?
My knowledge in this area is really out-of-dated and stopped somewhere like ten years ago. So I would like to ...
