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At what temperature is the speed of sound in helium (ideal gas, γ = 1.67, atomic mass = 4.003 u) the same as its speed in seawater at 20° C?

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  • At what temperature is the speed of sound in helium (ideal gas, γ = 1.67, atomic mass = 4.003 u) the same as its speed in seawater at 20° C?


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