Concept explainers
The amount of a uniformly distributed radioactive contaminant contained in a closed reactor is measured by its concentration c (becquerel/liter or Bq/L). The contaminant decreases at a decay rate proportional to its concentration-that is,
decay rate
where k is a constant with units of day
(a) Use Euler's method to solve this equation from
(b) Plot the solution on a semilog graph (i.e., ln c versus t) and determine the slope. Interpret your results.
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Numerical Methods For Engineers, 7 Ed
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