This is a problem related to the nanoscale quantum transport.
(a) name at least four critical length scales or parameters that should be considered in the quantum transport phenomena, and briefly explain why they are critical?
(b) quantization of hall resistance( ρxy) was discovered when the 2d electron gas (2deg) was subject to a strong magnetic field (b), and ρxy (b) = 1/n (h/e^2), here n is positive integers and h the planck constant. describe the physical origin of this quantization and what is the physical meaning of the number n.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

a. are

a=d/t

a="triangle"v/t

explanation:

a = acceleration