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

User MarkDBlackwell
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2 Answers

19 votes
19 votes

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 Gata
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3.2k points
18 votes
18 votes

Answer:

dvhd

Step-by-step explanation:

xhxjjdvcbxhjddvifidid

User Bleeding Fingers
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