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When a mechanic wants to empty the gasoline tank of a car he fills a plastic tube of gasoline dips one end of the tube into the gasoline in the tank and puts another end into an empty drum placed lowe?
Wiki User
∙ 14y ago
This is called siphoning. The gasoline-filled tube, when the end that is not in the gas tank is lowered to a point below the tank, it creates a pressure differential inside the tube. Just as liquid pours from a glass when it is tilted, so does the gasoline flow through the tube. As long as the tube in the tank is below the level of gasoline in the tank, the gasoline will continue to flow until the flow is interrupted (or until the tank is empty).
Wiki User
∙ 14y ago
The mechanic is using a siphon to transfer the gasoline from the car's tank to the drum. By creating a pressure difference between the two ends of the tube, gravity helps to move the gasoline from the higher tank to the lower drum. This method is simple and effective for emptying liquids from one container to another.
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