A mobile phone is ringing inside a glass jar.
The air from the glass jar is sucked out
completely. Therefore, when heard from
outside the jar.
(1) the ringing sound will have high pitch.
(2) the ringing sound will have low pitch.
(3) the ringing sound will not be heard.
(4) the ringing sound will have high
amplitude.
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Answer:
(3) The ringing sound will not be heard.
Answer:
The ringing sound will not be heard.
Explanation:
Because the air of the jar is sucked out and the phone is ringing inside the jar.