The Radioactivity Due to Carbon-14 Measured in a Piece of a Wood

question 82

Multiple Choice

The radioactivity due to carbon-14 measured in a piece of a wood from an ancient site was found to produce 20 counts per minute from a given sample,whereas the same amount of carbon from a piece of living wood produced 160 counts per minute.The half-life of carbon-14,a beta emitter,is 5730 y.The age of the artifact is closest to

• A) 5700 y.
• B) 12,000 y.
• C) 15,000 y.
• D) 17,000 y.
• E) 23,000 y.

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Definitions:

Forced-Distribution

A performance management system where employees are ranked and rated according to a pre-determined distribution curve, often leading to a certain percentage of employees being classified in categories such as high, medium, or low performers.

Performance Measurement

The process of quantifying the efficiency and effectiveness of past actions, using various indicators to assess outcomes against set standards or objectives.

Quality

The degree to which a product, service, or process meets or exceeds customer expectations or standards.

Behaviorally Anchored Rating Scale

A method of evaluating employees' performance by directly comparing their behaviors with specific examples of behavior that are anchored on a scale.