The Age of an Ancient Artifact Can Be Determined by the Amount

question 32

Multiple Choice

The age of an ancient artifact can be determined by the amount of radioactive carbon-14 remaining in it. If $D _ { 0 }$ is the original amount of carbon-14 and D is the amount remaining, then the artifact's age A (in years) is given by $A = - 8267 \ln \left( \frac { D } { D _ { 0 } } \right)$ Find the age of an object if the amount D of carbon-14 that remains in the object is 50% of the original amount $D _ { 0 }$

• A) \(4134 \mathrm { yr }\)
• B) \(5730 \mathrm { yr }\)
• C) \(2067 \mathrm { yr }\)
• D) \(16400 \mathrm { yr }\)
• E) none of these

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Definitions:

Membrane Receptor

A cell membrane-bound protein or protein complex that transduces signals from outside the cell to the cell's interior, initiating a cellular response.

Isotonic

A solution having the same osmotic pressure as some other solution, typically that of a cell or body fluid, which prevents net movement of water across membranes.

Net Movement

The overall transfer or migration of substances or particles from one location to another, often described in terms of direction and magnitude.

Water

A transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's hydrosphere and the fluids of all known living organisms.