Concept explainers
Three seconds after a gun is fired, the person who fired the gun hears an echo. How far away was the surface that reflected the sound of the shot? Use 340 m/s for the speed of sound.
The distance of the surface, which reflected the sound of the shot, from the observer when the observer hears the echo of the sound of gun fire after
Answer to Problem 22SP
Solution:
Explanation of Solution
Given Data:
Speed of the sound is
Time of receiving the echo is
Formula Used:
The formula for distance is
Here,
Explanation:
Echo is defined as the reflection of sound thatreaches to the observer after reflection from any surface with some delay.
Thus, the distance travelled by the sound during the echo is twice the distance of the reflecting surface from the observer.
Here,
Recall the formula of the distance travelled:
Substitute
Substitute
Conclusion:
The distance of the reflecting surface is
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Chapter 23 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
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