An echo is heard by a person who is standing up in front of a mountain which is 89 m away from him. If the speed of sound is 300 m/s, calculate the time needed to hear the echo.
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0
Answer:
As the sensation of sound persists in our brain about 0.1s,to hear a distinct echo the time interval between the original sound and the reflected one must be at be 344 m/s at the given temparture .
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Answered by
1
Answer:
0.59 s (approx)
Explanation:
Distance from the mountain = 89 m.
Speed of sound = 300 m/s.
Total distance the sound have to travel = (2×89) m
= 178 m
Time needed to hear the echo = (178/300) s
= 0.59 s (approx)
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