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OpenStudy (anonymous):
suppose that the density ∂ of electric charge inside a cylindrical cable of radius R cm is a function of the distance from the wire's axis: specifically ∂(r) = k/r^2 +1 coulombs per cubic centimeter, where k is a positive constant. FInd the total charge (in coulombs) contained in a segment of cable length L cm.
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OpenStudy (anonymous):
Just integrate it.
OpenStudy (anonymous):
Integrate from 0 to L
OpenStudy (experimentx):
multiply by the volume (arbitrary incremental volume) then integrate
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