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) \(1 / 2\)

---

Definitions:

Tasty Food

Edible substances that are perceived as having a pleasant flavor profile by the taste receptors.

Discriminative Stimuli

A specific stimulus in the presence of which a particular response is more likely to be reinforced, and in the absence of which a response is not reinforced.

Stimulus Generalization

The process by which a response is elicited by stimuli similar to the original stimulus associated with that response.

Higher-Order Conditioning

Higher-order conditioning is a process in classical conditioning by which a conditioned stimulus comes to signal another stimulus that is already associated with an unconditioned stimulus, leading to the same conditioned response.