Consider the volcanic regions and features listed and refer to the accompanying map. pay particular attention to the features and locations in the ring of fire and the east african rift valley. determine whether each location has volcanism as a result of plate convergence or plate divergence.

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?