The Carbon-14 Activity of Some Ancient Indian Corn Was Found

question 111

Multiple Choice

The carbon-14 activity of some ancient Indian corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon. If present-day plant life has 16 dpm per gram of carbon, how old is the Indian corn? (t_1/2 = 5,730 yr)

• A) 6,800 yr
• B) 2,500 yr
• C) 4,700 yr
• D) 10,000 yr
• E) 7,200 yr

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Definitions:

Total Cost

The sum of all costs associated with the production of a given quantity of output, including both fixed and variable costs.

Output Units

The individual items or quantities of a product that are produced by a company or an economic production process.

Total Variable Cost

The total of expenses that change in proportion to the activity of a business, such as materials and labor, in contrast to fixed costs.

Marginal Cost

The cost of producing one additional unit of a good, calculated by the change in total cost that comes from producing one more unit of output.