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A man stands one-third of the way between two walls and claps his hands, He hears two ...

A man stands one-third of the way between two walls and claps his hands, He hears two distinct echoes 1s apart. If the speed of sound is 330ms-1 the distance between the wall is

A. 33m
B. 110m
C. 220m
D. 330m
E. 495m




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