The Number of a Certain Radioactive Nuclide Present in a Sample

question 80

Multiple Choice

The number of a certain radioactive nuclide present in a sample decays from 160.to 20.in 39 minutes.What is the half-life of this radioactive species?

• A)8 minutes
• B)13 minutes
• C)18 minutes
• D)23 minutes
• E)28 minutes

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Definitions:

Marginal Productivity

The extra output that a business gains by adding one more unit of input, such as labor or capital.

Income Distribution

The way in which a country’s total GDP is spread amongst its population, affecting economic equity and quality of life.

Value Added

The increase in the value of a product or service as it passes through each stage of production or supply chain.

Marginal Productivity

The extra output or benefit gained from increasing one unit of a particular resource while keeping other resources constant.