Relationship between speed of sound and density

soandos · Dec 7, 2008

is there a relationship between the speed of sound and the density or the young modulus of the substance?
if so what is it?
thanks

russ_watters · Dec 7, 2008

Yes, both! http://en.wikipedia.org/wiki/Speed_of_sound#General_Formula

It is easiest to see in a solid object: the young's modulus determines the force applied by a compression wave of a certain amplitude. The density determines what acceleration particles of the object get when that force is applied. It's a collection of spring-mass systems.

Relationship between speed of sound and density

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