What is the wavelength of an earthquake wave if it has a speed of 9000 m/s and a frequency of 12 Hz?

The equation relating wavelength, speed, and frequency is:

wavelength = speed / frequency

Plugging in the given values, we get:

wavelength = 9000 m/s / 12 Hz = 750 m

Therefore, the wavelength of the earthquake wave is 750 meters.