Physics, 07.03.2020 01:30, tzartiger12

As a killer whale swims toward a seal, it sends out sound waves to determine the direction the seal is moving. When the
frequency of the reflected waves increases, the whale is(n)
the seal
A. catching up to
B. falling behind

Answers: 1

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As a killer whale swims toward a seal, it sends out sound waves to determine the direction the seal...