At normal temperature and pressur, 4g of He occupies a volume of 22.4 litre. Determine the speed of sound in helium. Take 1 atmospheric pressure `=10^(5)N//m^(2)` and `gamma` for helium `=1.67`.

Explanation

density, `rho = (4 xx 10^(-3))/(22.4 xx 10^(-3)) = (4)/(22.4) kg//m^(3)`
`upsilon = sqrt((gamma P)/(rho)) = sqrt((1.67 xx 10^(5) xx 22.4)/(4))`
= 969.2 m/s