Chapter SH, Problem 9.3APP

To determine

To calculate: Speed of a wave.

Answer to Problem 9.3APP

Speed of the wave is $\underset{\_}{10\text{ m/s}}$ .

Explanation of Solution

Given:

Frequency = $\text{4 Hz}$

Wavelength = $250\text{ cm}$

Formula used:

Speed is given by,

  $v=f\lambda$

where f is frequency and $\lambda$ is wavelength.

Calculation:

Speed is calculated as:

  $\begin{array}{l}v=f\lambda \\ v=\left(4\text{ Hz}\right)\left(2.5\text{ m}\right)\\ v=10\text{ m/s}\end{array}$

Conclusion:

Speed of the wave is $\underset{\_}{10\text{ m/s}}$ .