How does sound vary with distance?
There is the 1/r law for sound pressure and distance. Double the distance from a sound source gives 6 dB less sound pressure level. Scroll down to related links and look at "Sound pressure and the inverse distance law ".
Why does a long pendulum string disperse more energy than a shorter string?
Because it has to swish through more air molecules and push them out of the way
on every swing, more than the shorter pendulum would have to do.
Why do I hear bells when I read the Bible?
Imagination or you are more receptive to sounds that remind you of the Bible when reading it
Is there a Rw to dB conversion chart?
Rw is measured in units of dB, there is no need for conversion.
Yes. In some places it will be greater. In other places there will be destructive interference, and the resulting wave will be smaller than either, perhaps even zero.
Pitch
Why is the vibration of an object necessary for a sound wave to form?
"Sound waves" are basically pressure waves - areas of higher and lower pressure, that propagate as a wave. You must have SOME means to create those pressure changes, and to do so quickly.
What directs sound waves into the ear?
Your ear hears every little thing. There is no known reason for that.
I researched this once an there is no known thing.
hope this helps.
How does the temperature affect the frequency of an organ pipe?
A change in temperature will result in a change in the speed of sound. The frequency of a flute organ pipe is proportional to the speed of sound. For example, an increase in temperature will cause an increase in the speed of sound, and hence the pitch of the pipe will go up. A change of about 4oC will cause a change in the pipe's sound frequency of about 1%. That compares with a change of 6% between adjacent notes on the keyboard. Hence such a change would be significant.
The same effect occurs for the woodwind and brass instruments.
What do seismic waves an sound waves have in common?
They both move energy through a field without moving a substance.
How do you calculate wavelength of a sound wave?
v = fλ
V/f = λ (wavelength)
V = 340ms-1
340/f = λ
In short you need to know the frequency of the particular sound wave to work out it's wavelength. once you know that you plug it into the above equation and you will get the wavelength of the wave.
What happens to sound waves as they move away from the source of the sound?
They get distant and more quieter
Where could a person buy a sound wave measuring device?
You could buy a sound wave measuring device at most hobby shops. You might also find them at shops that carry musical instruments. There are also specialty sites online that carry them.
How long will it take a wave to travel 5000km?
That depends a lot on the speed. Assume any appropriate speed, then divide the distance by the speed.
So called "White Noise" is purely random.
Noise that you hear that comes from from physical processes almost always has a pattern and is not white noise.
Sound are imitations of sounds from other things?
"Sound that is an imitation of another sound" can be an echo, a recording, or an imitation.
What is the type of wave that allows you to hear the trumpets playing during a concert?
The waves that you hear are called sound waves - it doesn't matter whether it is emitted by a trumpet, or by any other object that you can hear.
How is sound technology being used by people in a boat?
People in a boat can talk to one another, to communicate.