Physics

Problem

Successive resonances in a tube closed at one end are found to differ in frequency by

400\,\text{Hz}

. If the speed of sound in air is

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

, what is the length of the tube? a)

0.86\,\text{m}

0.43\,\text{m}

1.72\,\text{m}

0.21\,\text{m}