Physics

Problem

Air in a pipe, which is open at both ends, is resonating in its first harmonic mode at a frequency of 956 Hz. If the speed of sound in air is

330 \text{ ms}^{-1}

, which of the following will give the length of the pipe, in metres? a.

\frac{1}{4} \left( \frac{330}{956} \right)

\frac{1}{2} \left( \frac{330}{956} \right)

2 \left( \frac{330}{956} \right)

4 \left( \frac{330}{956} \right)