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Elena L [17]
3 years ago
5

2 Points

Social Studies
2 answers:
prisoha [69]3 years ago
6 0
I think it is D, I hope this helped
seropon [69]3 years ago
3 0

Answer:

The Correct Answer is D

Explanation:

  • Strength is contained in decibels and is observed as sound amplification. Thus, the sound is proportional to the amplitude of the sound wave.
  • The repetition of a sound wave is recognized as pitch. People can recognize pitches within the acoustic spectrum of 22 to 20,000 Hz, but we can't recognize ultrasound or infrasound.

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