All the waves that are around us have similar properties. One type of wave is a (4)__ wave, which moves perpendicular to the
direction of the wave. Each wave has a specific (5) or a
measured distance from one point to the same point on the wave.
This property is usually measured from one (6) to the other,
or from the highest point to the next highest point. It could also be
measured from one lowest point, or (7)_, to the next lowest
point. If you want to know how high the wave is, you should
measure the (8) from the rest position to the crest
or to the trough.

One kind of e-book display consists of millions of very small spheres that float in a thin fluid layer between two conducting transparent plates. each sphere is black on one side and white on the other, and possesses an electric dipole moment directed from the white side to the black. when an electric field is applied between the plates, the spheres rotate so that their dipole moment lines up with the field. depending on the fields direction, either the black or the white sides of th espheres can be made visible.the dipole moment of the spheres can be modeled as two opposite charges of magnitude 3.5 x 10^-15 c, separated by a distancce of 100 micrometers (um). what is the maximum possible torque on a sphere if the electric field between the transparent plates is 4.0 x 10^5 n/c