why sound travels faster in glycerine in comparison to water
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A light, stiff liquid (such as glycerol with v = 1900 m/s) can have a higher speed of sound than a heavy, spongy solid (such as rubber with v = 1600 m/s). While water is denser than air, its stiffness is enough greater than air to compensate for the high density and make the speed of sound greater in water
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