toxicsugar22
  • toxicsugar22
Dichloro is a pesticide that was used in the middle decades of the 20th century to control maleria. Afterr 1945, it was also widely used on crops in the U, and as much as one ton be sprayed on a single cotton field. Hoowever after the toxic, effects of Dichloro on the evvironment began to appear, the chemical was banned in 1972. A common estimate for the half-life in the soil is 15 years. Write a decay law for Dichloro in the soil and use A for the initial concentration of Dicloro, and use t for the input variable
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
N = No*e^(-ht) where h is the half life, so: N = A * e^(-15t)
toxicsugar22
  • toxicsugar22
that the answer
anonymous
  • anonymous
No, I made an error

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anonymous
  • anonymous
ln(.5) = -15h so ln(2) = 15h and h = ln(2)/15 so...
anonymous
  • anonymous
N=A*e^(-ln(2)/15*t) note that t is not in the denominator
toxicsugar22
  • toxicsugar22
the answere is not clear
anonymous
  • anonymous
N=A*e^(-t*ln(2)/15)

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