Follow these steps to estimate the electrical conductivity of silver at temperature T = 300 K. The density of silver is rho = 10.5 g/cm³ and the molar mass is M = 108 g/mol. (a) Determine the concentration of conduction electrons in silver assuming that each silver atom contributes one electron.
(b) Use the equipartition of energy theorem (see e. g. Chapter 1 if you are unfamiliar with this) to estimate the average speed of conduction electrons.
(c) Estimate the mean free path of conduction electrons by equating it to the nearest-neighbor distance in the lattice. The latter must be estimated based on the numbers provided and the fact that metallic silver forms an fcc lattice.
(d) Combine the results of (a-c) to calculate the electrical conductivity.

Chapter 23, problem 075 the figure shows a geiger counter, a device used to detect ionizing radiation (radiation that causes ionization of atoms). the counter consists of a thin, positively charged central wire surrounded by a concentric, circular, conducting cylindrical shell with an equal negative charge. thus, a strong radial electric field is set up inside the shell. the shell contains a low-pressure inert gas. a particle of radiation entering the device through the shell wall ionizes a few of the gas atoms. the resulting free electrons (e) are drawn to the positive wire. however, the electric field is so intense that, between collisions with gas atoms, the free electrons gain energy sufficient to ionize these atoms also. more free electrons are thereby created, and the process is repeated until the electrons reach the wire. the resulting "avalanche" of electrons is collected by the wire, generating a signal that is used to record the passage of the original particle of radiation. suppose the radius of the central wire is 24 âµm, the inner radius of the shell 2.3 cm, and the length of the shell 14 cm. if the electric field at the shell's inner wall is 2.8 ă— 104 n/c, what is the total positive charge on the central wire?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field