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qaws [65]
3 years ago
7

Frequency more than 20,000 HZ​

Physics
2 answers:
Ilya [14]3 years ago
6 0

Answer:

dvhd

Explanation:

xhxjjdvcbxhjddvifidid

Leviafan [203]3 years ago
5 0

Answer:

The units of frequency are called hertz (Hz). Humans with normal hearing can hear sounds between 20 Hz and 20,000 Hz. Frequencies above 20,000 Hz are known as ultrasound

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