Which tagline from a car advertisement has the best connotative appeal to the parents of a new teenage driver?
a. advanced new safety features that get everyone home at night.
b. our sleek new style will make heads turn.
c. finally, a car as good for the planet as it is for the driver.
d. technology that lets you have your office on wheels.

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