The echo ( the sound reflection ) and conditions necessary for hearing the echo
The echo The echo is a repetition of sound produced due to its reflection , It can be used to tell how far away an object is , how fast the object is moving...
Tagged: Sound velocity
Nature and the properties of the sound waves
The sound The sound is an external factor that affects the ear causing the sense of hearing. and it produced due to the vibration of the bodies and it stops when the vibrating bodies...
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