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22 June, 08:45

Determine the speed of sound at 20 oC in (a) air, (b) helium, and (c) natural gas (methane). Express your answer in m/s.

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  1. 22 June, 09:15
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    The speed of sound at 20 oC in air is 343 m/s.

    The speed of sound in helium at 20 oC is 927 m/s.

    The speed of sound in natural gas (methane) at 20 oC is 446 m/s.

    Explanation:

    The speed of sound depends upon the density and elasticity of gas. The speed of sound is the distance which is traveled per unit time by a sound wave as it goes through an elastic medium. The speed of sound in gas depends only on its temperature and composition. Also the speed of sound refers to the speed of sound waves in air. Air IS 343 m/s Helium is 927 m/s. Natural gas (methane) is 446 m/s.
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