Question

Vibrations cause sound. So if there are more vibrations, sound will travel faster. In solids, molecules are fixed. Then, how can sound travel faster in solids?

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Question: Vibrations cause sound. So if there are more vibrations, sound will travel faster. In solids, molecules are fixed. Then, how can sound travel faster in solids?

:

Sound waves travel fastest in solids because solids are the most dense state of matter. Sound waves propagate by causing particles to vibrate. The closer the particles are to each other, the more readily they can collide and transmit these vibrations.

In gases, such as air, particles are spaced far apart, resulting in a longer time for vibrations to be passed from one particle to another. Conversely, in liquids, particles are much closer together than in gases, allowing quicker transmission of vibrations.

Finally, in solids, particles are tightly packed, almost touching. This close proximity allows the passage of sound vibrations between them to be nearly instantaneous, facilitating the fastest transmission of sound waves.


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