A certain powder has a distribution that is log- normal with a number median diameter of 10 um and a geometrical standard deviation of 1.8. Using definite integrals, determine the fraction of particles by mass that is contained within the size range from 10 to 15 um.

A certain powder has a distribution that is log- normal with a number median diameter of 10 um and a geometrical standard deviation of 1.8. Using definite integrals, determine the fraction of particles by mass that is contained within the size range from 10 to 15 um.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

A certain powder has a distribution that is log-
normal with a number median diameter of 10 um
and a geometrical standard deviation of 1.8. Using
definite integrals, determine the fraction of
particles by mass that is contained within the size
range from 10 to 15 um.

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