Calculate the velocity of sound in air at STP by using 1)newton's equation,2)Laplace's equation.the maxd of one mole of air=29.0?10 raised to-3kg square?

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Solution

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$V e l o c i t y o f s o u n d f r o m n e w t o n s f o r m u l a v = \sqrt{\frac{γ R T}{M}} = \sqrt{\frac{1.4 \times 8.314 \times 273}{29 \times 10^{- 3}}} = 331.01 m / s V e l o c i t y o f s o u n d f r o m L a p l a c e f o r m u l a v = \sqrt{\frac{P}{d}} = \sqrt{\frac{10^{5}}{1.225}} = 285.71 m / s R e g a r d s$

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