Cobalt-60 Is a Beta Emitter with a Half-Life of 5

question 112

Multiple Choice

Cobalt-60 is a beta emitter with a half-life of 5.3 years. Approximately what fraction of cobalt-60 atoms will remain in a particular sample after 26.5 years

• A) 1/5
• B) 1/16
• C) 1/26
• D) 1/32
• E) 1/64

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Definitions:

Telomeres

The protective caps at the end of chromosomes that shorten with each cell division, associated with aging and cell lifespan.

Critical Length

Often refers to a specific threshold or dimension required for a particular process, reaction, or phenomenon to occur; the context determines its exact meaning.

Disease

A condition that disrupts normal physiological or anatomical functioning, often characterized by specific symptoms and signs.

Middle Adulthood

A stage of human development typically ranging from the mid-40s to the mid-60s, characterized by increased focus on personal and professional achievement, stability, and preparing for retirement.