A ship is cruising slowly through a channel with steep canyon walls on each side. The captain blows his foghorn and an echo from one wall is heard 4.2 s after the horn was sounded. The echo from the other wall is heard 6.5 s after the first echo. How wide is the channel? Assume the speed of sound in air is 343 m/s.
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A ship is cruising slowly through a channel with steep canyon walls on each side. The captain blows...
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