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colinlovesmath
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The temperature in a star of conductivity 1 is inversely proportional to the distance from the center: u=7/(sqrt(x^2+y^2+z^2).
If the star is a sphere of radius 3, find the rate of heat flow outward across the surface of the star.
Not sure where to even start.
If the star is a sphere of radius 3, find the rate of heat flow outward across the surface of the star.
Not sure where to even start.