How Many Days Are Required for a Radioactive Sample, with a Half-Life

question 6

Multiple Choice

How many days are required for a radioactive sample, with a half-life of 5.7 d and an initial activity of 1.07 × 10⁵ Bq, to decay to an activity of 100 Bq?

• A) 57 d
• B) 46 d
• C) 68 d
• D) 39 d

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Definitions:

Semantic Priming

A phenomenon in which exposure to one word (e.g., nurse) facilitates the recognition of semantically related words (e.g., doctor).

Concept Usage

The ways in which ideas or abstractions are employed in different contexts to convey meanings or understand phenomena.

Script

A schema for routine events. See also schema and story grammar.

Classical View

A traditional perspective or theory within a field that has been widely accepted over time.