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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A dolphin located in seawater at a temperature of 25°C emits a sound directed toward the bottom of the ocean 150 m below. How much time passes before it hears an echo?

To determine
The time for sound to reach the sea floor and return.

Explanation

Given Info: The speed of sound in sea water at 25°C is 1533m/s and distance of the dolphin emits the sound towards the ocean is 150m.

Formula for the distance of the dolphin is,

2d=vt

  • d is the distance of the dolphin emits the sound towards the ocean
  • v is the speed of sound in sea water
  • t is the time

Rearrange the expression for t

t=2

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