the speed of sound in water is 1500 m/s . how far away from an under- sea rock should a deep sea diver be so, that can hear his own echo? the driver hears echo 3 sec
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Answer:
The deep sea diver should be 75 meters to hear his own echo
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Answer:
2d=v
Where, 2d is the total distance, v is the sound's velocity in sea, and t is the time by the sound to travel the distance.
To hear his own echo means the time is no longer than 0.1 second and 1500 m/s is the sound's velocity.
d=vt/2
d=1500x0.1/2
d=150/2
d=75m
When a sound wave travel from surface to the bottom of the earth, the sound echo which means the sound travels the distance twice. Thus, the velocity and time of the sound is equal to twice the distance.
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