The Half-Life for Electron Capture for Is 1

question 51

Multiple Choice

The half-life for electron capture for is 1.3 billion years. What will be the ratio in a rock that is 4.5 billion years old?

• A) 0.10
• B) 0.091
• C)10.
• D)11.
• E) 0.36

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Definitions:

Proportional

An attribute of a relationship where changes in one variable are associated with consistent, proportional changes in another variable.

Flat Tax Structure

A tax system with a constant marginal rate, usually applied to individual or corporate income.

Percentage

A ratio or fraction out of 100 that is used to express how large one quantity is relative to another quantity.

Marginal Rate

The rate of increase in a variable (e.g., tax rate, substitution, technical substitution) as another variable (e.g., income, quantity of another good) increases incrementally.