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Category > Physics Posted 23 May 2017 My Price 4.00

smokestacks

dern smokestacks use devices called scrubbers to remove large amouScrubber.jpgnt of pollution in the form of small particles (soot). Scrubbers use a two steps process: electrons are first added to the soot particle, and an electric force then pulls the particle out of the smoke stream. 

 

Consider a soot particle of mass msoot= 1 nanograms (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 qsoot. Suppose the collector has a total charge qcollector = 1.8e-06 C. If the separation between the collector and the soot particle is r = 0.2 m, 

 

What is the value of qsoot (in units of C) so that the electric force exerted on the particle is equal to its weight = mg ?.

Use: g = 10 m/s2, and k = 9E9 N m2/C2. 

 

 C

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SuperTutor
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Status NEW Posted 23 May 2017 05:05 AM My Price 4.00

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