Physics, 17.04.2020 01:33, kenz309

As a dolphin swims toward a fish, the dolphin sends out sound waves to determine the direction the fish is moving. If the frequency of the reflected waves is higher than that of the emitted waves, is the dolphin catching up to the fish or falling behind?

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As a dolphin swims toward a fish, the dolphin sends out sound waves to determine the direction the f...