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Physics, 29.11.2020 15:10 Redeyestudio53
An echo is sound that returns to you after being reflected from a distant surface (e. g., the side of a cliff). Assuming that the distances involved are the same, an echo under water and an echo in air return to you
a. at different times, the echo under water returning more slowly.
b. at different times, the echo under water returning more quickly.
c. at the same time
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An echo is sound that returns to you after being reflected from a distant surface (e. g., the side o...
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