A Radioactive Sample Has a Half-Life Of $10 \mathrm {~min}$ What Fraction of the Sample Is Left After

question 47

Multiple Choice

A radioactive sample has a half-life of $10 \mathrm {~min}$ . What fraction of the sample is left after $40 \mathrm {~min}$ ?

• A) \(1 / 4\)
• B) \(1 / 16\)
• C) \(1 / 8\)
• D) \(1 / 2\)

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Definitions:

Motor Programs

Sequences of motor movements that are either innate or learned and are activated by sensory stimuli or intentions.

Speech

The ability to express thoughts and feelings by articulating sounds.

A1

Refers to the primary auditory cortex, the region of the brain responsible for processing auditory information.

Secondary Auditory Areas

Regions of the brain involved in processing complex aspects of auditory information beyond the basic detection of sound, such as speech and music comprehension.