# Homework Help: Electric Flux through a Pyramid

1. Sep 22, 2008

### shinobi12

1. The problem statement, all variables and given/known data
A pyramid with horizontal square base, 6.00 m on each side, and a hieght of 4.00 m is placed in a vertical electric field of 52.0 N/C. Calculate the total electric flux through the pyramid's four slanted surfaces.

2. Relevant equations

Phi = E*A*cos(theta)

3. The attempt at a solution

2. Sep 22, 2008

### tiny-tim

Hi shinobi12!

Show us what you've tried, and where you're stuck, and then we'll know how to help.

3. Sep 22, 2008

### shinobi12

i found the length of the of the hypotenuse and found the area of the side and im having trouble figuring out the angle of the area vector and the electric field vector

4. Sep 23, 2008

### tiny-tim

Hint: what is the relationship between the flux through the four slanted surfaces, and the flux through the base?

5. Sep 23, 2008

### granpa

think of flux as flowing water. what is the net flow of water through the walls of the pyramid?