A. the pressure is reduced
B. the sound waves are pumped out
C. the waves are absorbed in the inner walls
D. There is no more material medium
E. the air is disturbed
Correct Answer:
Option D – There is no more material medium
A. the pressure is reduced
B. the sound waves are pumped out
C. the waves are absorbed in the inner walls
D. There is no more material medium
E. the air is disturbed
Correct Answer:
Option D – There is no more material medium
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