Answer to Question #166958 in Physics for Aashika Premkumar Bavitha

Question

A ripple tank produces water waves through the up and down movement of a wooden bar. The bar moves up 20 times in 4 s. The distance between each water wave is 0.04 m 

1. Calculate  the frequency of the waves.
2. State the wavelength of the waves.

            

3.Calculate the speed of the waves

4.The ripple tank is 0.8m long. Calculate the time it takes a water wave to travel from one end to the other. 

Answer 1

1)

$$f=\frac{20}{4}=5\ Hz$$

2)

$$\lambda=0.4\ m$$

3)

$$v=\lambda f=(0.4)(5)=2\frac{m}{s}$$

4)

$$t=\frac{l}{v}=\frac{0.8}{2}=0.4\ s$$