Which one of the following scenarios does not describe exponential decay?
A) A radioactive substance decayed by 53 grams every 3 hours.
B) A radioactive substance decreases by half every hour.
C) A radioactive substance in a certain hour was 81% of the population the previous hour.
D) The half-life of a radioactive substance is 10.9 hours.
E) A radioactive substance decreases by 11% every hour.

Question

Quizplus · Accepted Answer

Exponential decay is characterized by a constant percentage decrease over a given time period, while scenario A describes a constant decrease in grams rather than a percentage decrease.

Which One of the Following Scenarios Does Not Describe Exponential