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egoroff_w [7]
3 years ago
15

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.

Biology
1 answer:
Alinara [238K]3 years ago
7 0
The way in which you need to solve this is by using the formula:
<span>R = ρL/A 
</span>That one is the formula that demonstrates <span>Resistance of a wire in Ω.
The formula can be explained like this: 
</span><span>ρ is resistivity of the material in Ω-m </span>
<span>L is length in meters </span>
<span>A is cross-sectional area in m² </span>
<span>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</span>
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work \: done \:  =  \: force  \times distance
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Force = ?
force =  \frac{work \: done}{distance}
Force = 100/5 = 20N
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Answer:

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