In which medium does sound travel the fastest at a particular temperature?

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Air

Water

Iron

Ice

answer is C.

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Detailed Solution

In the iron medium, sound travels the fastest at a particular temperature.
The elasticity of the medium determines the speed of sound. Because solids have the most elasticity, they travel the fastest.
Because liquids have lower elasticities and gases have higher elasticizes, their speed decreases in liquids and increases in gases.
As a result, at a given temperature, sound travels the fastest through solids.
Sound travels at a speed of around

1500 m / s

in seawater. However, sound travels much slower in the air, at about

340 m / s

.
Because neighbouring particles collide more frequently in denser materials, sound waves travel faster.
As a result, at a given temperature, sound travels the fastest through iron.

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