A 400-N Block Is Dragged Along a Horizonatl Surface by an Applied

question 69

Multiple Choice

A 400-N block is dragged along a horizonatl surface by an applied force as shown. The coefficient of kinetic friction is u_k = 0.4 and the block moves at constant velocity. The magnitude of is:

• A) 100 N
• B) 150 N
• C) 200 N
• D) 290 N
• E) 400 Nb

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Definitions:

Economic Profits

Total revenues minus total costs, where total costs include both explicit and implicit costs.

Competitive Market

A market structure characterized by a large number of buyers and sellers, free entry and exit, and products that are similar enough to be interchangeable.

Long Run

A period of time in economics during which all inputs and conditions can be varied, allowing for full adjustment to changes.

Perfectly Competitive Market

A theoretical market structure characterized by an infinite number of buyers and sellers, where no single entity has the power to influence the market price.