Recent content by Rimantas B.

The question should not be why the wavelength is small (the numbers simply make it so), the question should be what it means. And such small a wavelength means that the Earth (if we consider it as a monolithic ball) is highly unlikely to exhibit any wave-like properties (to interfere, diffract...

I meant, all of the charged walls. The distances from each wall to the center are equal. This is a drawing showing the charged walls.

Homework Statement There is a cube with a side length of 0,2m. Its three adjacent walls bear an area charge of -2nC/m2. Find the strength of the electric field at the center of the cube. Homework Equations E = \frac{\sigma}{2 \varepsilon _{0}} dE = \frac{\sigma dS}{4 \pi \varepsilon...