A person makes a loud sound and hears the echo of the sound 1.2 seconds later calculate how far is the person from the object causing echo assume speed of sound is three 330 m/s
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Time=1.2 seconds
Speed=332
Distance=?
• S×t/2
=332×1.2/2
=166×1.2
=198.2m
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Answer:
assuming the person is in same position, and the time for sound to hit and come back to the person is same,
t1=t2
t1=t2
2t1=1.2s
t1=0.6s
speed=330m/s
speed=distance/time
330m/s=d/0.6s
(330m/s)*(0.6s)=d
330*10/6=d metres
55*10 m or 550 metres is the distance between the person from the sound reflector.
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