Neco 2017 Geography Question 42
Practice objective / multiple choice question 42 from the 2017 Neco Geography examination.
The infiltration rate of a soil follows Horton's equation \(f(t)=f_c+(f_0-f_c)e^{-kt}\), where \(f(t)\) is the infiltration rate (mm h\(^{-1}\)) at time \(t\) (h). For a particular site, \(f_0=30\) mm h\(^{-1}\), \(f_c=5\) mm h\(^{-1}\) and \(k=0.4\) h\(^{-1}\). Calculate the time (in hours, to one decimal place) at which the infiltration rate falls to \(10\) mm h\(^{-1}\).
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About This Question
This is Neco 2017 Geography Question 42. It is one of the objective questions from the 2017 Neco Geography examination.
Difficulty level: Medium .
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