Athin stream of water flows vertically downward. the stream bends toward a positively charged object when it is placed near it. the positively charged object is then removed. what will happen to the same stream of water when a negatively charged object is placed near it? explain.

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.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

In an experiment, how can i change human errors? be specific.