The Decay Rate of a Radioactive Sample Decreases from 175

question 73

Short Answer

The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is the mean life (time constant) of this sample?

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Definitions:

Animism

The belief that objects, places, and creatures all possess a distinct spiritual essence or soul.

Concrete Operational Stage

A developmental phase in children, identified by Jean Piaget, typically occurring between ages 7 and 12, where children begin to think logically about concrete events.

Cognitive Development

Cognitive development is the process by which individuals acquire and evolve in their thinking abilities, from infancy through adulthood, encompassing reasoning, memory, problem-solving, and decision-making skills.

Equal Amounts

Refers to a situation where two or more entities possess the same quantity or measure of something.