An Ancient Tree Is Found Which Has a Carbon-14 Disintegration

question 44

Multiple Choice

An ancient tree is found which has a carbon-14 disintegration rate of 11.3 units.If the disintegration rate of a living tree is 14.0 units,calculate the age of the ancient tree.t_1/2 = 5.73 * 10³ years for carbon-14 and 0.807 of the sample remaining corresponds to 0.309 half-life.

• A)1.77 * 10³ yr
• B)4.62 * 10³ yr
• C)5.73 *10³ yr
• D)1.85 * 10⁴ yr
• E)7.10 * 10⁴ yr

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Definitions:

Lumbar

Referring to the lower part of the spine or lower back region, composed of five vertebrae between the thoracic vertebrae and the sacral region.

Diencephalon

The diencephalon is a region of the brain that includes structures such as the thalamus and hypothalamus, integral to the regulation of various physiological processes.

Brain Stem

The lower part of the brain that connects the cerebrum with the spinal cord and controls vital functions like breathing and heart rate.

Cerebellum

A part of the brain located under the cerebrum, responsible for coordinating voluntary movements and maintaining balance and posture.