An Incompressible Fluid Is Flowing Through a Vertical Pipe with a Constriction

question 23

Multiple Choice

An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is 2.00 cm in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is 200 kPa. The velocity of the fluid in the wide section is 4.00 m/s. The narrow section is located 4.00 m below the wide section. What is the diameter of the narrow section for the pressure of the fluid in the narrow section to equal the pressure in the wide section? (density of the fluid is 1,000 kg/m³)

• A) 1.50 cm
• B) 1.36 cm
• C) 1.28 cm
• D) 1.12 cm
• E) 1.00 cm

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Definitions:

PiRNA

A class of small non-coding RNA molecules that are involved in the silencing of transposons and other gene regulatory functions primarily in the germline cells of animals.

Chromatin Structure

The complex of DNA and proteins, mainly histones, that forms chromosomes within the nucleus of eukaryotic cells, facilitating DNA packaging and gene expression regulation.

Initiator tRNA

The transfer RNA that recognizes the start codon on mRNA and initiates protein synthesis by bringing the first amino acid to the ribosome.

Amino Acid

Organic compounds that combine to form proteins, serving as the building blocks of life.