A Sample of a Radioisotope Shows an Activity of 999

question 105

Multiple Choice

A sample of a radioisotope shows an activity of 999 disintegrations per minute due to beta decay.If after 1.10 years the activity is 952 disintegrations per minute, what is the half-life of this radioisotope?

• A)4.38 × 10^-2 yr
• B)11.4 yr
• C)0.25 yr
• D)15.8 yr
• E)9.1 yr

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Definitions:

Creative Behaviour

The act of generating new and useful ideas, processes, or solutions.

Autonomy

The degree to which individuals or units have the freedom to make decisions and take actions independently.

Positive Affect

A psychological term that denotes the experience of pleasurable emotions such as joy, satisfaction, and enthusiasm.

Routine Work

Tasks or jobs that are highly repetitive and predictable, often requiring little creativity or problem-solving.