use devices called scrubbers to remove large amount of pollution in the form of
ID: 1865375 • Letter: U
Question
use devices called scrubbers to remove large amount of pollution in the form of small particles (soot). Scrubbers use a two to the soot particle, and an electric force then pulls the particle out of the smoke stream. steps process: electrons are first added Consider a sost prtile of mass moo 1.1 plcograms(1.1e-12 kg), which corresponds to a diameter of a few micrometers. Some number of electrons have been added to give the particle a total charge Qroot Suppose the collector has a total charge Acollector 1.6e-06 C. If the Soot separation between the collector and the soot particle is r 0.1 m parricles moving What is the magnitude of Qsoot (in units of C) so that the electric force exerted on the particle is equal to its weight upward Use: g 10 m/s2, and k 9e9 N m 2/C2 mg ? Ground Submit Answer Tries 0/2 How many electrons must be added to the soot particle ?Explanation / Answer
Here, electrostatic force = mg
k*qsoot * qcollector/r^2 = mg
9e9*qsoot*1.6e-6/0.1^2 = 1.1e-12*10
qsoot = 1.1e-12*10*0.1^2/[9e9*1.6e-6]
= 7.64*10^-18 C answer
b] n = q/e = 7.64*10^-18/(1.6*10^-19) = 48 electrons
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.