4. An object vibrates with a frequency of 15 hertz. Which of the following is true?
a. It produces sound which we can hear. b. It does not produce sound.
c. It produces sound which we
d. It produces sound which we can hear
cannot hear
if we strain our ears.
Answers
Answered by
4
Answer:
it produce sound which we cannot hear.
Explanation:
Because the lowest hearing pitch of human ears is 20 db
Answered by
2
Answer:
d
Explanation:
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