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Classical Mechanics Level 2

The velocity of sound in air is 332 m/s. Its velocity in vacuum is:

< 332 m/s The Same Meaningless
332 m/s

A Former Brilliant Member by A Former Brilliant Member

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2 solutions

Quentin Louis
Jan 13, 2018

Sound needs matter to propagate, it does not propagate in vacuum. The question is therefore meaningless.

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And yet you took the time to answer it and then write a comment. Ironic.

A Former Brilliant Member - 3 years, 4 months ago

Mechanical waves (sound waves) need to compress mass-bearing matter in order to propagate. That is why they can also be addressed as 'compressional waves'. In vacuum there is no matter, so sound waves cannot propagate.

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