Answer by user180046 for Speed of sound at temperatures below 0 °C
In absolute zero, the molecular vibration is in its least possible extend. Therefor it is almost impossible to fluctuate under the influence of sound wave. Imposing any form of energy including sound...
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Answer by pho for Speed of sound at temperatures below 0 °C
The speed of sound in an ideal gas is given by $$a = \sqrt{\gamma R T}$$Where $\gamma = \frac{C_p}{C_v}$, $R$ is the specific ideal gas constant and $T$ is the absolute temperature.Taking standard...
View ArticleAnswer by Ross Millikan for Speed of sound at temperatures below 0 °C
Wikipedia gives the formula $c_{air}=331.3\sqrt{1+\frac {T(^\circ C)}{273.15}}$, valid anywhere the ideal gas law is valid. The expression you quote is given at the first two Taylor series terms.
View ArticleAnswer by akhmeteli for Speed of sound at temperatures below 0 °C
I don't know about your formula, but the speed of sound is proportional to the square root of the absolute temperature (for ideal gases, and approximately so in air).
View ArticleSpeed of sound at temperatures below 0 °C
How can the speed of sound be calculated for temperatures below 0 °C (down to -40 °C)?Does the calculation $v=331\ \frac{m}{s} + 0.6 \frac{m}{s°C} \times T$ still hold (where T's unit is °C)?
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