What is the percentage decrease in the radioactive sample after 30 days?

Exponential Decay and Radioactive Samples

Interactive Video
•
Mathematics, Science, Chemistry
•
10th - 12th Grade
•
Hard

Emma Peterson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
20%
15%
12%
10%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to model exponential decay?
P(t) = P0 * t^k
P(t) = P0 * k^t
P(t) = P0 * e^(k*t)
P(t) = P0 * e^(t/k)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using a hypothetical initial amount in the decay model?
To simplify calculations
To make the model more complex
To avoid errors
To increase accuracy
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of the decay rate (k) calculated in the video?
-0.004261
-0.003261
-0.005261
-0.006261
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mathematical operation is used to solve for the decay rate in the exponential equation?
Natural Logarithm
Multiplication
Subtraction
Addition
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which property of logarithms is applied to solve the exponential equation?
Change of Base Property
Power Property
Quotient Property
Product Property
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the half-life of a radioactive element defined?
The time it takes for half of the radioactive material to decay
The time it takes for the element to reach a stable state
The time it takes for the element to double in amount
The time it takes for the element to completely decay
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