Which Statement About Radioisotopes Is FALSE

question 7

Multiple Choice

Which statement about radioisotopes is FALSE?

• A) Potassium-40 has an extremely long half-life.
• B) Carbon-14 is typically used to date sedimentary rock.
• C) The ratio of carbon-14 to carbon-12 is used in dating fossils.
• D) The half-life of a radioisotope does not vary with temperature or pressure.
• E) The nucleus of a radioisotope can change into that of a different element during decay.

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Definitions:

Straight-line Depreciation

A method of allocating the cost of a tangible asset over its useful life in equal annual amounts.

Projected Cash Flows

Estimated cash movements over a future period, based on expected income and expenses.

NPV

Net Present Value; the difference between the present value of cash inflows and the present value of cash outflows over a period of time.

Operating Working Capital

Current assets minus current liabilities, reflecting the short-term liquidity of a business.