A Thallium Source with a Half-Life Of $3.7$ Years Was Certified At

question 104

Multiple Choice

A thallium source with a half-life of $3.7$ years was certified at $10 \mathrm { kBq }$ ten years ago. What is its activity now?

• A) \(1.5 \mathrm { kBq }\)
• B) \(3.3 \mathrm { kBq }\)
• C) \(1.0 \mathrm { kBq }\)
• D) \(4.7 \mathrm { kBq }\)

---

Definitions:

Inuit Languages

A group of closely related languages spoken by the Inuit people, primarily residing in the Arctic regions of Greenland, Canada, and Alaska.

Snow Types

Snow types refer to the variety in the form and structure of snowflakes and snow crystals, influenced by temperature, humidity, and atmospheric conditions, affecting properties like texture and packability.

Whorfian Hypothesis

A theory suggesting that the structure of a language affects its speakers' worldview or cognition. Also known as linguistic relativity.

Nature Vs. Nurture

is a debate concerning the relative importance of an individual's innate qualities ("nature") versus personal experiences ("nurture") in determining or causing differences in physical and behavioral traits.