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20.please help 20. You are hiking to the top of a small canyon. When you stop for a rest, you decide to shout hello across

20.please help

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20. You are hiking to the top of a small canyon. When you stop for a rest, you decide to shout "hello" across the canyon. You hear your echo 1.11 s after your shout. if sound waves travel at 340m/'s, how wide is the canyon? (Record your answer in the numerical-response section below. ) Your

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