Answer to Question #328423 in Physics for Super

Question #328423

What is the speed of sound in a helium gas at a pressure of 15000pa

Expert's answer

The speed of sound in a gas

v_s=\sqrt{\gamma\frac{P}{\rho}}=\sqrt{\gamma\frac{RT}{M}}

At $t=0^\circ\rm C$

v_s=\sqrt{\frac{5}{3}*\frac{8.31*273}{4*10^{-3}}}=972\:\rm m/s

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