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You are using sonar over a spot in the ocean known to be 91.8 m deep. The system emits a 50.0-kHz pulse into the water. It takes 120.0 ms for the sound to travel to the ocean floor and back to the sonar system. Determine the speed of sound in the ocean and the wavelength of the sonar pulse.

Sagot :

Lanuel

Answer:

a. Speed = 765 m/s

b. Wavelength = 0.0153 m

Explanation:

Given the following data;

Distance = 91.8m

Time = 120 milliseconds to seconds = 120/1000 = 0.12 seconds

Frequency = 50KHz = 50 * 10³ = 50000 Hz

a. To find the speed of sound in the ocean:

Speed = distance/time

Speed = 91.8/0.12

Speed = 765 m/s

b. To find the wavelength;

Wavelength = speed/frequency

Wavelength = 765/50000

Wavelength = 0.0153 m

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