Assuming that the wave speed varies little when sound waves are traveling through a material that...
Assuming that the wave speed varies little when sound waves are traveling through a material that suddenly changes density by 10%, what percentage of the incident wave intensity is reflected?
Homework Answers
The percentage of the incident sound wave intensity reflected, PR, is given by
where sound wave is traveling in a material of density 
and strikes a material of density 
.
for instance if we consider
= 100 and material that suddenly changes density by 10%
= 110
The percentage of the incident wave intensity is reflected is <1% (less than one percentage).
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