The Isotope Has a Half-Life of 5,715 Years

question 44

Multiple Choice

The isotope has a half-life of 5,715 years. After 20,000 years, a sample of the isotope is reduced 0.1 grams. What was the initial size of the sample (in grams) ? How large was the sample after the first 2,000 years? Round your answers to four decimal places.

• A)0.6786, 0.5324
• B)0.5655, 0.4437
• C)0.9048, 0.7099
• D)1.4703, 1.1536
• E)1.1310, 0.8874

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Definitions:

Aristotle

Ancient Greek philosopher and scientist whose work in philosophy, ethics, and natural sciences profoundly influenced Western intellectual history.

Different Intelligences

A theory suggesting that intelligence is not a single general ability but consists of a variety of distinct types of cognitive capabilities.

Gardner

Refers to Howard Gardner, an American developmental psychologist best known for his theory of multiple intelligences.

General Ability

A broad measure of an individual's overall intellectual capacity or cognitive competence, often associated with IQ.