A Sample Contains 1 $\times$ 10^-3 G of ⁴⁰K $\times$ 10⁹ Years

question 37

Multiple Choice

A sample contains 1.000 $\times$ 10^-3 g of ⁴⁰K.The half-life of ⁴⁰K is 1.250 $\times$ 10⁹ years.What is the activity of the sample?

• A) 3300 Bq
• B) 1250 Bq
• C) 382.0 Bq
• D) 265.0 Bq
• E) 3.000 Bq

---

Definitions:

Quantifier

A logical term used to specify the quantity of specimens in the domain of discourse that satisfy an open sentence.

Open Sentences

Statements in mathematics that contain one or more variables and can be true or false depending on the values of these variables.

Scope

In discussion or analysis, scope refers to the extent or range of view, outlook, application, operation, or effectiveness of a subject.

Truth-Functional Compound

A complex statement whose truth value is determined by the truth values of its component statements and the logical connectives that combine them.