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Chapter 5: Problem 42

What is the frequency of infrasonic sound?

Short Answer

Expert verified
Infrasonic sounds have a frequency range from 0.001 Hz to 20 Hz and are represented as \(f < 20 \,\text{Hz}\). These sounds are not audible to the average human ear due to their extremely low frequencies.

Step by step solution

01

Define Infrasound

Infrasound refers to sound waves with frequencies below the lower limit of human audibility. These are sounds that have a frequency lower than 20 Hz (Hertz), which is the lowest frequency the average human ear can detect.
02

Identify the Frequency Range

Infrasonic sound waves have a frequency lower than 20 Hz. Typically, the frequency range for infrasound is considered to be from 0.001 Hz to 20 Hz.
03

Express the Frequency Range of Infrasound

The frequency range of infrasonic sound can be represented as \(f < 20 \,\text{Hz}\) where \(f\) denotes the frequency in Hertz. The range starts from 0.001 Hz and goes up to, but not including, 20 Hz.
04

Conclusion

In conclusion, infrasonic sounds have a frequency range from 0.001 Hz to 20 Hz, and can be represented as \(f < 20 \,\text{Hz}\). These are sounds that are not audible to the average human ear due to their extremely low frequencies.

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