- #1

lampshade

- 17

- 0

## Homework Statement

I'm really bad at these type of problems. I'm supposed to find the monopole moment of this continuous charge distribution. its charge is

[tex]\sigma = const*cos(\theta) [/tex]

## Homework Equations

[tex]p = \int r'\rho(r')d\tau[/tex]

which then since we are doing a surface charge should be

[tex]p = \int r' \sigma da[/tex]

## The Attempt at a Solution

Well, I want to do the double integral of something to find the charge distribution so I can find the monopole moment. I'm thinking something like

[tex]p = \int_{0}^{2 \pi}\int_{0}^{2 \pi} r' * c \cdot cos(\theta) sin( \theta) r^2 d\phi d\theta[/tex]

and I'm thinking that r' is just r so then it would be

[tex]p = \int_0^{2\pi} d\phi \int_0^{\pi} r'^3cose(\theta)sin(\theta)d\theta[/tex]

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