Chapter 25, Problem 29A

Calculate the speed of waves in water that are 0.4 m apart and have a frequency of 2 Hz.

To determine

The speed of the wave in water.

Answer to Problem 29A

  $v=0.8\text{m/sec}$

Explanation of Solution

Given:

Waves are 0.4 m apart.

Frequency is 2Hz.

Formula used:

The relation between frequency, wavelength is

  $v=f\lambda$

Here,

v is the speed.

f is frequency.

λ is wavelength.

Calculation:

Here it is given waves are 0.4 m apart. So the wavelength is 0.4m.

and f=2 Hz

Substituting the values,

  $\begin{array}{c}v=2\times 0.4\\ =0.8\text{m/sec}\end{array}$

Conclusion:

The speed of wave in water is $0.8\text{m/sec}$