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A Dolphin swimming at 4.5 m/s is chasing a clown fish swimming in the same direction....

A Dolphin swimming at 4.5 m/s is chasing a clown fish swimming in the same direction. If the dolphin emits a 120 kHz frequency and received back an echo at 10 kHz, what is the speed of the clown fish? will the dolphin be able to catch the fish?

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