A Compact Disc of a CD Player Has a Moment $\times$

question 74

Multiple Choice

A compact disc of a CD player has a moment of inertia I = 2.5 $\times$ 10^-5 kg · m² and rotates at 500 rev/min.Taking L = I $\omega$ and using the quantization of angular momentum,the approximate value of L is ( = 1.055 $\times$ 10^-34 J · s)

• A)1.2 \(\times\) 10³²
• B)2.0 \(\times\) 10³⁰
• C)1.2 \(\times\) 10³¹
• D)130
• E)3.5 \(\times\) 10¹⁵

---

Definitions:

Familiarity

The state of being well-known or easily recognized due to repeated exposure or experience.

Processor Speeds

The rate at which a computer's CPU executes instructions, typically measured in gigahertz (GHz), indicating billions of cycles per second.

Megabyte

A unit of data measurement equal to approximately one million bytes, often used to measure file size or storage capacity.