Say if each sound is infrasound, audible or ultrasound for a person: 8 Hz, 640 Hz, 19 000 Hz, 42…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Say if each sound is infrasound, audible or ultrasound for a person: , , , . For the audible ones, find the wavelength in air. (Speed of sound )
Need a reminder? The key ideaShow
Loudness depends on the amplitude, pitch on the frequency, and quality on the mixture of frequencies. People hear about to : below is infrasound, above is ultrasound.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. : infrasound. and : audible. : ultrasound.
Step 2. : . : .
Answer: infrasound, audible, audible, ultrasound; and .
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