View source for Physics equations/Rewrite

===17-Physics of Hearing===
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*<math>v_s =\sqrt{   \frac{T}{273}    }\cdot 331 \text{m/s}</math> is the the approximate speed near Earth's surface, where the temperature, T, is measured in Kelvins.  A theoretical calculation is <math>v_s=\sqrt{\frac{\gamma k_B T}{m}}</math> where <math>\gamma =\frac{\varpi+2}{\varpi}</math> for a semi-classical gas with <math>\varpi</math> [[w:degrees of freedom (physics and chemistry)|degrees of freedom]]. For a diatomic gas such as Nitrogen, {{nowrap begin}}&gamma; = 1.4.{{nowrap end}}
*<math>v_s =\sqrt{   \frac{F}{\mu}    }</math> is the speed of a wave in a stretched string if <math>F</math> is the tension and <math>\mu</math> is the linear mass density (kilograms per meter).
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