The action of sunlight on automobile exhaust produces air
Chapter 4, Problem 22(choose chapter or problem)
The action of sunlight on automobile exhaust produces air pollutants known as photochemical oxidants. In a study of cross-country runners in Los Angeles, it was shown that running performances can be adversely affected when the oxidant level reaches 0.03 part per million. Suppose that on a given day, the oxidant level L is approximated by the formula where t is measured in hours, with t 0 corresponding to 12 noon, and L is in parts per million. At what time is the oxidant level L a minimum? At this time, is the oxidant level high enough to affect a runners performance?
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