Examlex
Which of the following is not one of the essential nutrients?
Sound Waves
Vibrations that travel through air or another medium and can be heard when they reach an ear or a detecting device.
Amplitude
The magnitude or intensity of a fluctuating signal, measured from the average or rest position to the peak.
Loudness
A subjective perception of the intensity of a sound, influenced by its amplitude and frequency, and how it is received and interpreted by the ear and brain.
Frequency
How often something happens within a certain period or within a specific sample.
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