(a) Knowing a particle's density pp and its settling velocity v₁, show how to deter- mine its diameter. Consider both the non-Stokes' and the Stokes' law regions. (b) Determine the size of water droplet that has v, = 1 cm s at T = 20°C, 1 atm. (a) A unit density sphere of diameter 100 um moves through air with a velocity of 25 cm s. Compute the drag force offered by the air. (b) A unit density sphere of diam- eter 1 um moves through air with a velocity of 25 cm s. Compute the drag force of- fered by the air. Calculate the terminal settling velocities of silica particles (pp = 2.65 g cm³) of 0.05 um, 0.1 μm, 0.5 μm, and 1.0 μm diameters.

(a) Knowing a particle's density pp and its settling velocity v₁, show how to deter- mine its diameter. Consider both the non-Stokes' and the Stokes' law regions. (b) Determine the size of water droplet that has v, = 1 cm s at T = 20°C, 1 atm. (a) A unit density sphere of diameter 100 um moves through air with a velocity of 25 cm s. Compute the drag force offered by the air. (b) A unit density sphere of diam- eter 1 um moves through air with a velocity of 25 cm s. Compute the drag force of- fered by the air. Calculate the terminal settling velocities of silica particles (pp = 2.65 g cm³) of 0.05 um, 0.1 μm, 0.5 μm, and 1.0 μm diameters.

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

(a) Knowing a particle's density Pp and its settling velocity v₁, show how to deter-
mine its diameter. Consider both the non-Stokes' and the Stokes' law regions. (b)
Determine the size of water droplet that has v, = 1 cm s at T = 20°C, 1 atm.
(a) A unit density sphere of diameter 100 um moves through air with a velocity of 25
cm s. Compute the drag force offered by the air. (b) A unit density sphere of diam-
eter 1 um moves through air with a velocity of 25 cm s. Compute the drag force of-
fered by the air.
Calculate the terminal settling velocities of silica particles (pp = 2.65 g cm) of 0.05
μm, 0.1 μm, 0.5 μm, and 1.0 μm diameters.

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