If an Iron-59 Sample Has an Initial Activity of 160

question 143

Multiple Choice

If an iron-59 sample has an initial activity of 160 dpm,how much time is required for the activity to drop to 20 dpm? (t1/2 = 45 days)

• A)45 days
• B)90 days
• C)135 days
• D)180 days
• E)210 days

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Definitions:

Technical Rate

The rate at which technological improvement increases production efficiency, often measured as a percentage increase in output per unit of input.

Variable Factors

inputs in production that can be adjusted in the short term, such as labor and raw materials, contrasted with fixed factors like machinery.

Production Function

An equation or graph showing how output changes with variations in input factors, holding all else constant.

Decreasing Marginal

In economics, a situation where each additional unit of input results in a smaller increase in output compared to previous units.