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vredina [299]
3 years ago
10

Dolphins emit clicks of sound for communication and echolocation. A marine biologist is monitoring a dolphin swimming in seawate

r 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?
Physics
1 answer:
lyudmila [28]3 years ago
6 0

Answer:

10 Hz.

Explanation:

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

v_s= Speed of dolphin = 7.2 m/s

f_s= Frequency transmitted = 2210 Hz

Doppler effect

f=\frac{v}{v+v_s}f_s\\\Rightarrow f=\frac{1520}{1520+7.2}2210\\\Rightarrow f=2199.58\ Hz

f_s-f=2210-2200 = 10 Hz

∴ 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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