anonymous
  • anonymous
Consider the following geometric solids. A sphere with a ratio of surface area to volume equal to 0.08 m-1. A right circular cylinder with a ratio of surface area to volume equal to 2.1 m-1. What results would you expect if these two models were compared in a diffusion test?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
A. The rate of diffusion would be the same for the two models. B. The rate of diffusion would be faster for the right cylinder. C. The rate of diffusion would be slower for the right cylinder. D. The rate of diffusion would be faster for the sphere.
anonymous
  • anonymous
@jenny1994
anonymous
  • anonymous
suppose they have the same Volume ... which has bigger surface Area? (what does diffusion go _thru_?)

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anonymous
  • anonymous
d
anonymous
  • anonymous
@lightgrav
anonymous
  • anonymous
@lightgrav
anonymous
  • anonymous
d ?? the stuff needs to diffuse thru the surface, and the cylinder is shaped like a pencil! (the cylinder's surface Area is 24x as large as the sphere's Area). These ratios are Area/Volume, since they have units 1/m .
anonymous
  • anonymous
so it will be the same
anonymous
  • anonymous
how long will it take the stuff to get from the center of the spherical lump to the surface? it has to go 24x as far ... and the diffusion distance goes like sqrt(t) ... or diffusion time goes like d^2
anonymous
  • anonymous
so its 24^2
anonymous
  • anonymous
don't wad up your wet socks - they won't dry!
anonymous
  • anonymous
bruh so its either b or c
anonymous
  • anonymous
HELP
anonymous
  • anonymous
the stretched sock dries fast. the stretched sock is shaped like the cylinder. drying takes place by diffusion, so the stuff only gets out if it's near the surface..
anonymous
  • anonymous
so b
anonymous
  • anonymous
so b or d
anonymous
  • anonymous
come on! what don't you get, here? c and d mean the same thing (so you _know_ neither of them can be right!)
anonymous
  • anonymous
b

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