Compared to the acceleration due to earth's gravity at a point three earth radii above the north pole, the acceleration due to earth's gravity at the north pole is

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

What is the temperature in degrees celsius of a substance with a tempature of 49k

Write down two additional questions about earth's magnetic field that will make your presentation more informative.