Carbon-14 Has a Half-Life of 5730 Y

question 72

Multiple Choice

Carbon-14 has a half-life of 5730 y.A sample of wood has been recovered by an archaeologist.The sample is sent to a laboratory,where it is determined that the activity of the sample is 0.144 Bq/g.By comparing this activity with the activity of living organic matter,0.230 Bq/g,the scientist determines how old the wood sample is,or more precisely,when the tree that the sample came from died.How old is the sample of wood?

• A) 3870 y
• B) 4250 y
• C) 4590 y
• D) 2630 y
• E) 2940 y

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Definitions:

Replacement Chain Approach

The Replacement Chain Approach is a method used in capital budgeting to compare projects of unequal lifespans by replicating them until they reach a common end point, facilitating fair comparison.

Cost of Capital

The rate of return that a business needs to generate in order to cover the cost of generating new capital, which can include debt and equity.

NPV

Net Present Value (NPV) is the calculation used to find the present value of cash flows at a specific discount rate, often used to assess the profitability of an investment.

Payback Period

The amount of time it takes for an investment to generate an amount of income or cash flows to recover the initial capital outlay.