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OpenStudy (anonymous):

Sound waves travel the fastest through which of the following a. cold gas b. hot gas c. cold vaccum d. hot vaccum

OpenStudy (anonymous):

It is mechanical wave ,so it would be gas and it travel faster in hot because it is mechanical and hot molecules collide faster ,so it travel faster(mean speed). http://www.newton.dep.anl.gov/newton/askasci/1993/physics/PHY67.HTM

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