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To estimate the width of a canyon, a hiker strikes a dead branch against a boulder and measures the amount of time it takes for

To estimate the width of a canyon, a hiker strikes a dead branch against a boulder and measures the amount of time it takes for the echo to return from the far off canyon wall. The hiker hears the echo 1.80 s later. Assuming the air temperature is 10C, how wide is the canyon

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