About What Fraction of the Initial Activity of a Radioactive

question 79

Multiple Choice

About what fraction of the initial activity of a radioactive source remains after 10 half-lives?

• A)1.0 × 10^-10
• B)9.8 × 10^-4
• C)5.0 × 10^-2
• D)3.9 × 10^-3

---

Definitions:

Vomiting

The forceful expulsion of stomach contents through the mouth, a reflex action controlled by the brain to remove harmful substances.

Spitting

Ejecting saliva, fluid, or other substances from the mouth.

Immature Cell

A cell that has not yet developed the distinct characteristics or functions of its mature form, often found in early stages of development or in regenerative processes.

Germ Cell

A cell that is a precursor to gametes (sperm and eggs) and has the potential to pass genetic material to offspring.