A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
A) 0.933 Hz
B) 0.000259 Hz
C) 1.07 Hz
D) 6.76 Hz
E) 0.148 Hz

Question

Quizplus · Accepted Answer

We can use the formula v = λf, where v is the velocity of the wave, λ is the wavelength, and f is the frequency. Rearranging the formula, we get f = v/λ.

Substituting the given values, we get f = (700 km/hr)/(750 km) = 0.000933 Hz = 0.000259 Hz (rounded to 3 significant figures). Therefore, the correct answer is B.

A Tsunami, an Ocean Wave Generated by an Earthquake, Propagates