How Long Does It Take Light to Travel Across the Width

question 13

Multiple Choice

How long does it take light to travel across the width of a Pb nucleus of radius 7.1 fm?

• A)2.4 \(\times\) 10^-23 s
• B)1.2 \(\times\) 10^-23 s
• C)2.4 \(\times\) 10^-20 s
• D)4.7 \(\times\) 10^-23 s
• E)none of the above

---

Definitions:

Accurately

With precision or exactness, ensuring correctness or validity in information or execution.

Detection

The process of discovering, identifying, or noticing the existence or presence of something.

Cell Phone Use

Refers to how individuals engage with and utilize mobile phones for communication, entertainment, information gathering, and other purposes.

Catchy Tune

A song or melody that is easily memorable and tends to stick in one's mind, often due to a simple, repetitive structure and appealing harmony.