The speed of sound in air is and the density of air is .

PHYSICS · Multi-part · CBSE · Physics · Waves · Waves

Problem

The speed of sound in air is

340\text{ m/s}

and the density of air is

1.29\text{ kg/m}^3

. (a) What is the displacement amplitude for a sound wave having a frequency of

100\text{ Hz}

and a pressure amplitude of

10\text{ Pa}

? (b) The displacement amplitude of a sound wave of frequency

300\text{ Hz}

10^{-7}\text{ m}

. What is the pressure amplitude of this wave?