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Velocity in sound waves

Updated: 8/10/2023
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12y ago

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Usually we talk about speed of sound. Speed is the rate of change of distance with time.

Velocity is a measure of both speed and direction of a moving object.

Velocity is the rate of change of displacement with time.

Speed is a distance an object goes, velocity is measurment of speed AND direction. Speed of sound at 20 degrees Celsius (68 degrees Fahrenheit) is 343 meters per second.

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14y ago
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14y ago

The accepted value of speed of sound in air is determined by the equation vT= (331.5 + 0.607T) m/s for the value T, put the temperature in. This will give you more accurate results. The temperature is important not the air pressure. The air pressure and the air density are proportional to each other at the same temperature. The speed of sound c depends on the temperature of air and not on the air pressure!

The humidity of air has some negligible effect on the speed of sound. The air pressure

and the density of air (air density) are proportional to each other at the same temperature.

It applies always p / ρ = constant. rho is the density ρ and p is the sound pressure.

Notice: The speed of sound is alike on a mountain top as well as at sea level with the same air temperature. Google is not correct (look at the following link)

http://www.google.com/search?q=speed+of+sound

Here is the answer of Google: "Speed of sound at sea level = 340.29 m/s".

This is no good answer, because they forgot to tell us the temperature,

and the atmospheric pressure "at sea level" has no sense. The speed of sound in air is determined by the air itself. It is not dependent upon the sound amplitude, frequency or wavelength.

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12y ago

Velocity of sound is not sound velocity.

Speed of sound has no effect on the particle velocity.

Call velocity of sound better speed of sound.

Call sound velocity better particle velocity.

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15y ago

129 ft/s in dry air at 20 °C, more information you can find here http://en.wikipedia.org/wiki/Speed_of_sound

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15y ago

quickness of motion;swiftness;rate of change of position;in relationto time;speed.

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knight21century

Lvl 2
1y ago

By definition, acoustic impedance (AI) is derived by multiplying the density and velocity of each subsurface layer.

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12y ago

334 m s-1

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Q: Velocity in sound waves
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Sound waves are longitudinal waves in air. Velocity of sound waves in air at NTP = 332 m/s.


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How does the medium affect the transmission of sound waves?

the medium will definitely effect the speeds of both speed and sound...check out the following articles from wikipedia for more information. speed of sound http://en.wikipedia.org/wiki/Speed_of_sound speed of light http://en.wikipedia.org/wiki/Speed_of_light


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