What is the role of air pressure in the filling of a syringe with a liquid medicine, by a doctor?
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Answer:
The air pressure plays an important role in the filling of syringe as the liquid medicine rushes into the syringe when air pressure inside it decreases on pulling piston out.
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Explanation:
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When a doctor pulls the plunger, it releases all the air molecules inside of the syringe which caused force to occur, thus as there is no more opposing force inside the syringe the air pressure acts. Air pressure is pushing the syringe from every side. So, the air pressure acting from down pushes up the water inside the syringe.
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