Dolphins emit clicks of sound for communication and echolocation. a marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1520 m/s. when the dolphin is swimming directly away at 7.2 m/s, the marine biologist measures the number of clicks occuring per second to be at a frequency of 2210 hz. what is the difference (in hz) between this frequency and the number of clicks per second actually emitted by the dolphin?

10 Hz.

Explanation:

v = Speed of sound in water = 1520 m/s

= Speed of dolphin = 7.2 m/s

= Frequency transmitted = 2210 Hz

Doppler effect

∴ Difference (in Hz) between this frequency and the number of clicks per second actually emitted by the dolphin is 10 Hz.

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