A Compact Disc Rotates About Its Center at Constant Angular

question 34

Multiple Choice

A compact disc rotates about its center at constant angular speed. Which one of the following quantities is constant and non-zero for a dust particle near the edge of the disc?

• A)linear velocity
• B)torque about the center of the disc
• C)centripetal acceleration
• D)angular momentum
• E)angular acceleration

---

Definitions:

Tons

A unit of weight equivalent to 2,000 pounds in the United States (short ton) or 2,240 pounds in the United Kingdom (long ton).

Quality

The standard of something as measured against other things of a similar kind; the degree of excellence of something.

Extremely Diverse

Referring to a broad spectrum of differences among people or entities, including but not limited to culture, ethnicity, opinions, and skills.

Dual Career

A situation where both partners in a relationship have significant career paths and work responsibilities.