A Water Line Enters a House 2

question 15

Multiple Choice

A water line enters a house 2.0 m below ground.A smaller diameter pipe carries water to a faucet 5.0 m above ground, on the second floor.Water flows at 2.0 m/s in the main line and at 7.0 m/s on the second floor.Take the density of water to be 1.0 x10³ kg/m³.The pressure in the main line is 2.0 x 10⁵ Pa; then the difference in pressure between the main line and the second floor is:

• A)6.9 x 10⁴ Pa with the main line at the higher pressure
• B)2.3x10⁴ Pa with the main line at the higher pressure
• C)6.9x 10⁴ Pa with the main line at the lower pressure
• D)2.3 x 10⁴ Pa with the main line at the lower pressure
• E)9.1 x10⁴ Pa with the main line at the higher pressure

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Definitions:

Stress-Related Disorders

A category of psychological disorders characterized by significant emotional distress or physical symptoms resulting from high levels of stress.

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Clinical studies that test the effectiveness of a treatment by comparing it to a placebo, or inert substance, to determine if the treatment has a real effect beyond expectations.

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