How can get water and oil from hundreds of feet below the earth has to be discussed. Concept Introduction: The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. When you push a pipe down a deep hole into a pool of water at the bottom of a well, air inside the pipe is pushing down on the water in the pipe, and air outside the pipe is pushing down on the water outside the pipe, which in turn pushes up on water inside the pipe all is in balance.

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Chapter 11, Problem 11.20QP

Interpretation Introduction

Interpretation:

How can get water and oil from hundreds of feet below the earth has to be discussed.

Concept Introduction:

The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. When you push a pipe down a deep hole into a pool of water at the bottom of a well, air inside the pipe is pushing down on the water in the pipe, and air outside the pipe is pushing down on the water outside the pipe, which in turn pushes up on water inside the pipe all is in balance.

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