Explain how the speed of sound can be determined by the method of echo
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One can stand on a great height make sure at a great distance horizontal to you is a wall or something rigid have a stopwatch.
The idea behind this is you make a sound and start your stopwatch at a same time and when you hear the sound for the second time due to echo stop the watch now the distance travelled by the sound wave will be
2 times the distance between you and the wall / by the time span in your watch
Make sure the wall is straight or the echo won't be coming direct to you it will be diverted due to irregularities in the wall
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the speed of sound can be determine by the method of echo is that the speed is constant and echo is separate the speed by its determine the speed and there voice is also loudly and its remain constant to the speed by this method echo determines the speed.
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