1.) What do all types of waves have in common? a. frequency b. speed c. wavelength d. amplitude. 2.) How can you tell one form of wave from another? a. wavelength b. speed c. color d. amplitude.

3.) Among the four waves: radio, microwave, ultraviolet and x-rays, radio waves have the highest frequency. a. true b. false.

4.) The following are light waves, except. a. infrared waves b. gamma waves c. sound waves d. radio waves.

5.) Which waves are the type that can give us suntans and sunburns? a. infrared b. ultraviolet radiation c. radio waves d. x-rays.

PLEASE ANSWER A, B, C, OR D

Aballet student who learns with the of his instructor is demonstrating learning.

What sort of waves exhibit the doppler effect?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0