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What is
Sound power level?
Decibel level of power calculated using the standard
reference value of 10-12 watts.
Do the sound waves travel through all media?
Yes. Speed of sound varies with the material through which
it travels. Broadly, in gases the sound speed is about 330
metres per second whereas in liquids and solids it is 1.5
km and 5.0 km per second respectively.
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What is echo?
This question should be answered here. |
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