Humans can hear thunder at different frequencies. These correspond to wavelengths ranging from 2.75 to 16.5 meters. If the speed of sound is approximately 330 m/s, what frequencies of thunder can humans hear?

Question

907.5 to 5,445 hertz
0.0083 to 0.05 hertz
20 to 120 hertz
2.75 to 16.5 hertz

Answer 1

The frequency of a sound wave can be calculated using the formula:

frequency = speed of sound / wavelength

Substitute the values given:

Lower bound frequency = 330 m/s / 16.5 m = 20 Hz
Upper bound frequency = 330 m/s / 2.75 m = 120 Hz

Therefore, humans can hear thunder at frequencies ranging from 20 to 120 Hz.

The correct answer is:
20 to 120 hertz