Sound speed FormulaSpeed the Sound in AirSpeed of Sound in various MediumFactors AffectingFAQs

Sound tide travel through a tool by alternately contracting and expanding the parts of the tool in which it travels.

You are watching: Identify two factors that affect the speed of sound

We recognize that speed is calculated making use of the simple formula

Speed = Distance/Time

The speed of sound is characterized as the distance took trip per unit time by any sound. In the following section permit us learn to recognize the speed of sound in miscellaneous mediums.

What is speed of Sound?

The rate of sound is defined as the dynamic propagation the sound waves. This depends on the characteristics of the medium through which the propagation bring away place. Speed of sound is offered for explicate the rate of sound waves in one elastic medium.

Speed that Sound Formula

The formula for rate of sound is given with respect come gases. That is the square source of the product the the coefficient the adiabatic expansion and also pressure of the gas divided by the thickness of the medium. The mathematical representation is given as:

\(v=\sqrt\frac\gamma P\rho \)


v is the speed of soundγ is the coefficient that adiabatic expansionP is the pressure of the gasρ is the thickness of the medium

Factors influence the rate of Sound

There are two components that affect the rate of sound:

Density that the medium

For sound waves to travel, over there is a need of medium and also density the the medium is thought about to be among the components on i beg your pardon the speed of sound depends. When the medium is dense, the molecule in the tool are carefully packed which way that the sound travels faster. Therefore, the speed of sound boosts as the density of the tool increases.

Temperature that the medium

The temperature that the medium and the sound tide are straight proportional to every other. Therefore, as the temperature increases, the rate of sound increases.

What is the speed of Sound in Air?

The rate of sound is critical parameter provided in a range of field in Physics. The rate of sound describes the distance took trip per unit time through a sound tide propagating with a medium. The speed of sound in air at 20oC is 343.2 m/s which converts to 1,236 km/h.


The rate of sound in gases is proportional to the square source of the pure temperature (measured in Kelvin) however it is elevation of the frequency of the sound wave or the pressure and also the density of the medium. But none that the gases we find in actual life are best gases and also this causes the properties to slightly change.

Example on rate of Sound in Air

Question: The frequency the the center C on the piano is 256 Hz. What will be the wavelength the the sound corresponding to the keep in mind of center C if the speed of sound in wait is assumed to be 345 m/s.

Answer: permit wavelength = λ

We understand that, v = f.λ

Where, v = 345 m/s

And f = 256 Hz

Substituting the worths in the equation, we obtain λ = 1.35 m.

Speed the Sound in Solid, Liquid and Gases

Sound can travel with wood too! In fact, sound likes travelling with solid more. In the olden days, doctors provided stethoscopes consisting of thin wood rods with broadened ends and also they worked precisely like our modern-day ones and also performed just as well. How have the right to sound travel v solids?

Speed that Sound in Solid

Sound is nothing more than a disturbance i beg your pardon is propagated by the collisions between the particles; one molecule hitting the next and so forth. Solids are considerably denser 보다 liquids or gases. This method that the molecules space closer to each various other in solids than in liquids and also in liquids than in gases. This closeness because of density means that they can collide an extremely quickly. Effectively it takes much less time because that a molecule that a solid come bump into its adjoining molecule. As result of this advantage, the rate of sound in a solid is bigger than in a gas.

Speed of sound in hard is 6000 metres per 2nd while the rate of sound in steel is same to 5100 metres every second. Another interesting fact about the speed of the sound is the sound travel 35 times quicker in diamonds than in the air.

Speed the Sound in Liquid

Similarly, the density of a fluid is higher than the density of a gas. Thus the distances between molecules are more in liquids than in solids yet are much less than in gases. For this reason the rate of sound in liquids lies in between the speed of sound in solids and gases.

Speed that Sound in Water

The rate of sound in water is an ext than that of the air. Or it deserve to be claimed that the sound travels quicker in water 보다 in air. The rate of sound in water is 1480 metres per second. The is also interesting to know that the speed may vary between 1450 to 1498 meters per 2nd in distilled water whereas the rate is 1531 metres per 2nd in seawater when the temperature is between 20oC come 25oC.

Speed of Sound in Gas

We need to remember that the rate of sound is independent of the density of the tool when it enters a liquid or solid. Since gases broaden to to fill the offered space, density is quite uniform irrespective of the kind of gas. This plainly isn’t the situation with solids and also liquids.

Speed that Sound in Vacuum

The rate of sound in a vacuum is zero meters per second, together there are no particles present in the vacuum. The sound waves take trip in a medium when there space particles because that the propagation of this sound waves. Because the vacuum is an empty space, over there is no propagation of sound waves.

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Table of speed of Sound in assorted Medium

The table listed below lists the speed of sound in assorted media. The proportional variation of rate with thickness is clearly visible here.

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The table shows the speed of sound in various materialsAnother really curious truth is that in solids, sound waves have the right to be created either by compression or by tearing of the solid also known together Shearing. Such waves exhibit different properties native each various other and also travel at various speeds. This impact is seen clearly in Earthquakes. Earthquakes are created due to the activity of the planet plates i m sorry then sends out these disturbances in the form of waves comparable to sound waves with the earth and to the surface leading to an Earthquake. Typically compression tide travel faster than tearing tide which is why Earthquakes always start with an up and also down motion followed after some time by side to side motion. In seismic terms, the compression tide are referred to as P-waves and also the tearing waves are dubbed S-waves. They are the much more destructive of the two, leading to most the the damage in one earthquake.