Question 20 of 25 How does electric force affect an atom?
A. It keeps the electrons in the atom.
B. It pushes the neutrons away from the protons.
C. It keeps the neutrons in the atom.
D. It pushes the electron away from the protons.

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?