The Decay Constant for Strontium 90 Is λ = 0 $\mathrm { P } _ { 0 }$

question 6

Short Answer

The decay constant for strontium 90 is λ = 0.0244, where the time is measured in years. How long will it take for a quantity $\mathrm { P } _ { 0 }$ of strontium 90 to decay to $\frac { 1 } { 3 }$ its original size?
Enter your answer exactly in the form $\frac { \ln a } { \mathrm {~b} }$ where a is a reduced fraction and b is a real number to four decimal places (no units).

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Definitions:

Heritability Of Personality

The proportion of variation in personality traits among individuals that can be attributed to genetic differences, often studied in twin and adoption studies.

Unique Experiences

Events or encounters in one's life that are distinctive and not common, often leaving a lasting impact or creating a sense of individuality.

Shared Family Environment

The aspects of the family setting that individuals have in common and that may affect their development and behavior.

Evolutionary Approach

A perspective in psychology that emphasizes the role of natural selection and adaptation in the development of human behaviors and mental processes.