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Question
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a bare room
Solution
The person would hear echoes when talking in a bare room.
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RELATED QUESTIONS
An echo returned in 3 s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m s−1?
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Numerical problems:
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Speed of sound in benzene: 200 ms-1
