A hiker determines the length of a lake by listening for
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. She hears the echo 2.3s after shouting. The speed of sound in air is 343 m/s. Determine the length of the lake.
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a hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of
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