A boy receives the echo of his clap reflected by a nearby hill 0.8s later. If the speed of sound in air is 3.40ms\(^-1\), how far is he from the hill?
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Correct Answer: Option B
Explanation:
Distance = speed × time
= (3400) × (0.812)
= 136m
Distance = speed × time
= (3400) × (0.812)
= 136m