describe an experiment that you could do to show how charged objects can affect other objects without touching them.
use the phrase electric field correctly in your post.
describe one way in which the electric field of a charge is similar to the magnetic field of a bar magnet.
explain how you can remember this property of electric and magnetic fields.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?