Physics

Problem

The speed of sound in dry air at

300\,\text{K}

(with

\gamma=1.40

) is

340\,\text{m\,s}^{-1}

. The air is then heated to

360\,\text{K}

, and because of increased humidity its ratio of specific heats falls to

\gamma=1.33

. What is the new speed of sound in the air? a)

388\,\text{m\,s}^{-1}

331\,\text{m\,s}^{-1}

363\,\text{m\,s}^{-1}

372\,\text{m\,s}^{-1}