Question

What is the wavelength of an earthquake that shakes you with a frequency of 33 Hz and gets to another city 95 km away in 20.6 s?

Round your answer to 0 decimal places.

Do not forget the unit

Answer 1

$$v=d/t\\ =95000/20.6=4612\:\rm m/s$$

$$\lambda=\frac{v}{f}=\frac{4612}{33}=140\:\rm m$$