* The NAAQS for fine particles (PM25, annual average) is 12 µg/m?. Every time you breathe, you take in about 1 liter of air. (a) Assuming that the air contains 12 µg/m³ of fine particles, how many grams of fine particles do you take in with every breath? (b) Assuming that all the particles are spheres with a diameter of 1.0 µ, how many particles do you take in with every breath? (c) If you are an industry representative, which of these numbers will you cite? If you represent an environmental organization, which will you cite?

* The NAAQS for fine particles (PM25, annual average) is 12 µg/m?. Every time you breathe, you take in about 1 liter of air. (a) Assuming that the air contains 12 µg/m³ of fine particles, how many grams of fine particles do you take in with every breath? (b) Assuming that all the particles are spheres with a diameter of 1.0 µ, how many particles do you take in with every breath? (c) If you are an industry representative, which of these numbers will you cite? If you represent an environmental organization, which will you cite?

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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Question

Assume the particles have a density of 2000 kg/m³.

2.2.* The NAAQS for fine particles (PM25, annual average) is 12 µg/m?. Every time you breathe,
you take in about 1 liter of air.
(a) Assuming that the air contains 12 µg/m³ of fine particles, how many grams of fine
particles do you take in with every breath?
(b) Assuming that all the particles are spheres with a diameter of 1.0 µ, how many particles
do you take in with every breath?
(c) If you are an industry representative, which of these numbers will you cite? If you
represent an environmental organization, which will you cite?

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