Applying radioactive decay to determine the percent left of compound

Applying radioactive decay to determine the percent left of compound

Assessment

Interactive Video

Physics

9th - 10th Grade

Hard

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The video tutorial explains growth and decay models, focusing on the half-life of radioactive radium. It provides a step-by-step guide to solving for the decay rate and calculating the percentage of radium remaining after 100 years. The tutorial uses the formula Y = A * e^(RT) and demonstrates how to apply logarithms to solve for the decay rate. The conclusion shows that 96% of radium remains after 100 years, given its half-life of 1620 years.

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3 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you solve for the rate of decay (R) in the context of the radium problem?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What does the natural logarithm of both sides help to determine in the decay model?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the significance of the value 0.96 in the context of the radium decay after 100 years.

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