Exposure to Radioactive Material Is Considered Safe After 10 Half-Lives

question 9

Multiple Choice

Exposure to radioactive material is considered safe after 10 half-lives because

• A)less than a tenth of 1% of the material remains.
• B)less than 12.5% of the material remains.
• C)ten is an even number.
• D)all of the material will have decayed at that time.

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Definitions:

Conduct Disorders

A group of behavioral and emotional problems in children and adolescents, characterized by aggression toward others, destruction of property, deceitfulness, or violation of rules.

Cross-Sectional Design

A type of observational study that analyzes data from a population, or a representative subset, at a specific point in time.

Locomotion

The ability to move from one place to another, which can be observed in all animals and involves processes such as walking, swimming, or flying.

Fear Of Heights

An anxiety disorder also known as acrophobia, characterized by an extreme and irrational fear of high places.