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Find the ratio of velocity of sound in h...

Find the ratio of velocity of sound in helium `(gamma =5//3)` and that in oxygne `(gamma=7//5)`. Given the molecular weights of Helium and Oxygen are 4 and 32 respectively.

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`(v_(He))/(v_(Oxy))=sqrt((gamma_(He))/(gamma_(Oxy)).(M_(Oxy))/(M_(He)))=sqrt(((5//3)32))/((7//5)4)=sqrt((200)/(21))`
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