The intensity of sound decreases by a factor of ten as it pass through a wall of uniform composition.If the wall is replace with a similar wall having the same thickness,but an absorption coefficient double that if the first wall,the intensity of the same sound will decrease by a factor of ____ as it passes through the new wall.
A) 10
B) 12
C) 20
D) 21
E) 100
Correct Answer:
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