Calculate Vector Field Flux Through Sphere S of Radius 1

michael892
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Given is vector field
\overrightarrow{C}(\overrightarrow{r})=r
calculate flux
\Phi =\int_{S} \overrightarrow{C}\cdot d\overrightarrow{A}
through sphere S with beginning in [0,0,0] and r=1
 
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welcome to pf!

hi michael892! welcome to pf! :wink:

show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
 
i know i had to calculate surface integral but i didnt have multivariable calculus yet
 
hih michael892! :smile:

(just got up :zzz:)
michael892 said:
i know i had to calculate surface integral but i didnt have multivariable calculus yet

you won't need calculus, it's not complicated enough for that

what is r.dn on a sphere of radius r ? :wink:

(where n is the outward normal unit vector)
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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