When us hear a sound, again and again, it is called the echo of the sound. In the human mind the persistence the the sound stays for 0.1 seconds.

You are watching: In which one of the following locations can a person hear the echo of a sound

The rate of the sound at room temperature is 344 m/s. We understand that the rate of the sound wave is given by :

*

d is the distance extended by the sound from allude of generation that the sound come the mirroring surface and back.

*

*

For listening the echo that a sound, the distance covered by the sound in one way should it is in 17.2 m/s

So, the correct choice is (B) "At the very least 16.6 meter in front of the reflecting surface".



Answer from: dondre54

The best answer is B. At least 16.6 meter in front...

The sound moves in the air in ~ 340 m / s, and the ear have the right to only hear the echo if it returns at least 1 / 10th after its emission, a street of at least 16.6 meters (or 17 meters) v reflective surface.



Answer from: SpookyAlex2132
At the very least 16.6 meter in former of the mirroring surface

Answer from: annette211pdd8v9
If you are at least approximately 16.6 meter or therefore from the mirroring surface, climate you have the right to hear the echo. If you"recloser 보다 that, there"s tho an echo, however the delay between the original sound and the echo is so quick that your ear/brain device can"t different them.The speed of sound in usual air is about 340 meters per second. So somewhere around 16.5 - 17 meters of physical separation results in 1/10 the a second delay until the echo. That"s taken into consideration to it is in the minimum perceptible hold-up for an echo.

Answer from: twistedhyperboles
The answer come this is At the very least 16.6 meters in former of the showing surface.The speed of sound without any type of interference is only about 340 m/s with the vibration that the media in which it passes through. Hope this aided :)Have a good day

Answer from: blacee01
The place in i beg your pardon a human being is an ext likely to get an echo that the soud being sent out is at least 16.6. Meter in prior of the mirroring surface. Therefore, the prize is to this item is letter A. The rate of sound without any interference is only about 340 m/s traveling with the vibration that the media in i m sorry it overcome through.
Answer from: tddreviews
Well due to the fact that there room no choices i would certainly guess a cave or a an are that is very empty with walls that deserve to reflect sound 
Answer from: Gigglygoose3159
What space the selections ?

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