Why does the pencil appear broken in the cup of water?

question options:

electromagnetic/light waves compress more when they travel through denser media.

electromagnetic/light waves cannot travel through solids.

electromagnetic/light waves travel at different speeds through different media.

electromagnetic/light waves get closer together when they go through dense media like glass.

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages