A Venturi Tube May Be Used as the Inlet to an Automobile

question 13

Multiple Choice

A Venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (ρ = 1.2 kg/m³.)

• A)70 Pa
• B)85 Pa
• C)100 Pa
• D)120 Pa
• E)81 Pa

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Definitions:

Posttranscriptional Regulation

The control of gene expression at the RNA level, occurring after transcription but before translation.

Inducible Genes

Genes whose expression is increased or initiated in response to specific stimuli or environmental conditions.

Environmental Stimuli

External factors that influence the behavior and physiology of organisms, such as temperature, light, and sound.

Proteolytic Processing

The breakdown of proteins into smaller polypeptides or amino acids by the action of enzymes.