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Frequency more than 20,000 HZ​
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Frequency more than 20,000 HZ​

User Kerrick
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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

User Azeemarif
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4 votes

Answer:

dvhd

Step-by-step explanation:

xhxjjdvcbxhjddvifidid

User Starf
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