BIG BRIAN:What is the meaning of life?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

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?

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.