Transcription: A canal connects two bodies of water that may have different water levels. Ships traveling through the canal move from one water level to another through a lock, a rectangular chamber with watertight gates at each end. In the lock, the level of water can be raised and lowered by a system of valves and water passages. Suppose a ship is traveling from the higher water level to the lower. First, an operator at a nearby ship station opens the lock gates at the high end. The ship enters the lock and the lock gates are closed. Next, the lock operator opens one or more valves so that water from the l ...
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