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## Homework Statement

http://smartphysics.com/Content/Media/Images/EM/03/h3_lineD.png [Broken]

charge density 1 = .00029 C/m

charge density 2 = -.00087 C/m

h = .116 m

a = .094 m

a) What is the total flux Φ that now passes through the cylindrical surface of height h=.116 m? Enter a positive number if the net flux leaves the cylinder and a negative number if the net flux enters the cylinder.

b) The initial infinite line of charge is now moved so that it is parallel to the y-axis at x = -4.7cm (i.e. the two lines are equidistant from the center of the cylinder). What is the new value for Ex(P), the x-component of the electric field at point P?

c) What is the total flux Φ that now passes through the cylindrical surface? Enter a positive number if the net flux leaves the cylinder and a negative number if the net flux enters the cylinder.

## Homework Equations

gauss' law

## The Attempt at a Solution

a) How can we use Gauss' law? The magnitude of the field isn't uniform so it doesn't simplify.

b) This is easy enough, included as context for the next part.

c) The net flux should be the same as in part a) since the total charge flowing through the surface is the same.

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