A Large Water Storage Container Is Filled to a Depth

question 53

Multiple Choice

A large water storage container is filled to a depth of 3.0 m. The volume above the water is filled with air. In order to pump the water from the container, the air pressure in the container is increased by 3.0 105 N/m². What happens to the pressure in the water at a depth of 1.0 m when the air pressure is increased?

• A)Nothing, it is still at a depth of 1.0 m and the pressure in the water depends only on the depth.
• B)It increases by 1.0 105 N/m², since it is at 1/3 the depth of the water.
• C)It increases by 2.0 105 N/m², since it is at 2/3 the depth from the bottom of the container.
• D)It increases by 3.0 105 N/m².
• E)It increases by 3.0 105 N/m² + 9.8 103 N/m² since it is 1.0 m deep in the water.

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Definitions:

Measures of Dispersion

Statistical calculations that describe the spread or variability among a set of numerical data.

Measures of Correlation

Statistical techniques used to determine the degree to which two variables are related, indicating how changes in one variable are associated with changes in another.

Variance

A measure of the extent to which a set of scores vary on either side of their mean value. The square root of variance gives the standard deviation.

Descriptive Statistics

Descriptive statistics involve statistical techniques that summarize or describe the main features of a collection of data, including measures like mean, median, and mode.