Which characteristic is the same for every color of light in a vacuum?

a. energy
b. frequency
c. period
d. speed

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?

Newton's second law states that f = m x a (force is mass times acceleration). which example would have the greatest acceleration?

Make a drawing of the electric field lines around a positive charge, then make a second drawing of the electric field lines around a negative charge.