(a) Suppose you imbedded some free charge in a piece of glass. About how long would it take for the charge to flow to the surface?
(b) Silver is an excellent conductor, but it’s expensive. Suppose you were designing a microwave experiment to operate at a frequency of 1010 Hz. How thick would you make the silver coatings?
(c) Find the wavelength and propagation speed in copper for radio waves at 1MHz. Compare the corresponding values in air (or vacuum).