Tagged Questions
0
votes
3answers
74 views
Lethality of sounds and extreme “loudness”
In theory, could pure sound be lethal? How loud would it have to be? Also, which events are the loudest in the universe, and how loud are they? I'm confining attention to events which occur regularly, ...
4
votes
2answers
1k views
Why does the balloon pop?
When we pierce a balloon with a sharp needle, it pops and produce a great sound. But, It doesn't pop when we open the mouth of the balloon (through which we have blown air)...
So, Why doesn't the gas ...
3
votes
2answers
644 views
How can sound waves propagate through air?
We know that the sound waves propagate through air, and it can't travel through vacuum. so the thing that help it doing that is the air's molecules pressure. So my question how can that happens? I ...
6
votes
1answer
149 views
What is the cause of noise generation at my bike helmet
I am looking for anexplanation of this phenomenon:
I was riding my bike, (not driving it, was sitting on the back seat) with the helmet on. While the glass of the helmet was intact, I could hear ...
2
votes
3answers
587 views
Why is there a 90˚ phase angle between particle velocity and sound pressure in spherical waves?
My text says that in a plane sound wave (or in the far field), particle velocity and pressure is in phase. As we move closer to the sound source (to near field and more spherical waves), the phase ...
0
votes
1answer
173 views
what is the relationship of sound volume to atmospheric pressure?
what is the relationship of sound volume to atmospheric pressure? if I was in a plane with a cabin pressure equal to 8000 feet would the volume drop be noticable?
10
votes
4answers
954 views
How does a steady wind flow generate sound?
When a wind blow through sharp edge, say, edge of a paper, you can see the vibration of the paper and hear the sound.
For this type of oscillation, it should be a damped oscillation with external ...
3
votes
3answers
1k views
What is the relation of sound propagation to air pressure?
Hi there i am wondering, air is making sound propagate. So in vacuum there is no sound. but what is the relation of pressure to sound volume? is it linear?
if i have a source of sound and lets say i ...
