Mathematics, 26.02.2020 02:27, thebiggestbigbilly
A person coughs when a foreign object is in the windpipe. The velocity of the cough depends on the size of the object. Suppose a person has a windpipe with a 22-mm radius. If a foreign object has a radius r, in millimeters, then the velocity V, in millimeters/second, needed to remove the object by a cough is given by
V(r)= k(20r^2- r^3), 0< = r < =20
where k is some positive constant. For what size object is the maximum velocity needed to remove the object?
Answers: 3
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A person coughs when a foreign object is in the windpipe. The velocity of the cough depends on the s...
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