A CD Has a Diameter of 12

question 55

Multiple Choice

A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular speed of 20.0 radians per second, then the period of the rotational motion is

• A) 0.143 s.
• B) 0.224 s.
• C) 0.314 s.
• D) 0.421 s.
• E) 0.558 s.

---

Definitions:

Supplier Power

The influence that suppliers may exert on businesses and markets by controlling the pricing and quality of their goods or services.

Perfect Competition

A market structure characterized by an infinite number of small suppliers and buyers, leading to price-taking behavior.

Monopolists

Firms or individuals that are the sole providers of a particular product or service in a market, giving them the power to set prices without competition.

Profitable

The ability of a business or activity to generate earnings that exceed its expenses and costs.