Problem — Speed of a sound wave

Problem

A sound wave in air has frequency $f = 680\;\text{Hz}$ and wavelength $\lambda = 0{,}50\;\text{m}$. Calculate the propagation speed.

Solution

Fundamental relation. $v = \lambda f$:

$v = 0{,}50 \cdot 680 = \ev{340\;\mathrm{m/s}}$

This is the typical value for the speed of sound in air at room temperature.

Linked atoms

Topics: Onde Concepts: Periodo e frequenza