crystanto2om2ber crystanto2om2ber
  • 03-03-2017
  • Biology
contestada

What is the resistance of a 20-cm-long column of blood in this artery? assume that resistivity of blood is equal to 1.6 ωm.

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pkmnmushy
pkmnmushy pkmnmushy
  • 16-03-2017
The way in which you need to solve this is by using the formula:
R = ρL/A 
That one is the formula that demonstrates Resistance of a wire in Ω.
The formula can be explained like this: 
ρ is resistivity of the material in Ω-m 
L is length in meters 
A is cross-sectional area in m² 
A = πr², r is radius of wire in m 
As soon as you have your numbers, you can replace and proceed to get the asnwer
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