Which of the following could be reasonable explanations for how a piece of invisible tape gets charged? select all that apply.
(1) protons are pulled out of nuclei in one tape and transferred to another tape.
(2) charged molecular fragments are broken off one tape and transferred to another.
(3) electrons are pulled out of molecules in one tape and transferred to another tape.
(4) neutrons are pulled out of nuclei in one tape and transferred to another tape.

Need in all of themmm only answer if you know pls

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.

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.