## Conceptual Physics (12th Edition)

The wave speed is frequency multiplied by wavelength. For the highest frequency: $v = 340 \frac{m}{s} = f \lambda = (20000 Hz)(\lambda)$. Solve for $\lambda = \frac{340 m/s}{20000 Hz} = 0.017 m$. For the lowest frequency: $v = 340 \frac{m}{s} = f \lambda = (20 Hz)(\lambda)$. Solve for $\lambda = \frac{340 m/s}{20 Hz} = 17 m$.