Sonar equipment sends sound waves into deep water and measures A. refraction of the transmitted wave. B. only the direction of the reflected wave. C. the time delay of the returning echoes. D. interference of the transmitted and reflected waves.
Sonar equipment sends sound waves into deep water and measures: the time delay of the returning echoes.
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Polio123|Points 357|
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Updated 5/1/2016 2:08:16 PM
Edited by Janet17 [5/1/2016 2:08:15 PM], Confirmed by Janet17 [5/1/2016 2:08:16 PM]
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