A Horizontal Force of 5

question 72

Multiple Choice

A horizontal force of 5.0 N pushes a 0.50-kg block against a vertical wall.The block is initially at rest.If = 0.60 and = 0.50, the frictional force after a period of time is:

• A)0 N
• B)2.5 N
• C)3.0 N
• D)4.0 N
• E)4.9 N

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Definitions:

Nasopharynx

The upper part of the throat that lies behind the nose and above the soft palate, serving as a passageway for air from the nose to the throat and lungs.

Laryngopharynx

The region of the throat that connects the oropharynx above with the trachea and esophagus below, facilitating the passage of food and air.

Catabolism

The breakdown of complex molecules in living organisms to form simpler ones, often releasing energy.

Complex Substances

Materials composed of two or more chemical elements or compounds, having intricate and multifaceted structures.