Physics, asked by prasoon1, 1 year ago

why can you not hear the echo if you stand 10m away from a wall and shot towards it?

Answers

Answered by niveshmahajan69
1
because we need to be at least 17 m away from the wall to be able to hear the echo according to the laws of physics
Answered by Anonymous
1
Heya !
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You can not hear the echo because 
 The human ear cannot hear an echo from the source sound if the delay is less than 1/15 of a second. so, since the velocity of sound is  343 m/s at a  room temperature and we know the room temperature is 25°C the reflecting object should be more than 11.3 m from the sound source at this temperature for an echo to be heard by a person at the source. so , sound will not hear unless the minimum distance would be covered .
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Anonymous: is it copied??
Anonymous: it is copied
niveshmahajan69: i dont think so
niveshmahajan69: the guy is type of topper
Anonymous: i can give u the site name
Anonymous: https://www.urbanpro.com/class-ix-x-tuition/what-is-minimum...echo.../2962596
copied from this site
Anonymous: u can check
niveshmahajan69: i dont STALK girls so why would i STALK a boy
niveshmahajan69: if you dont want his work dont take it and let it be
Anonymous: ok
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