How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340ms-1]
a
186m
b
272m
c
544m
d
1088m
e
2000m
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Rebelx12
5 years ago
To calculate distance of echo or sound waves.
2d=vt (note d=vt for other distances of waves excluding sound waves)
therefore 2d=340*1.6
d=272

