What is the following product? assume x≤0 and y≤0 √5x^8y^2 * √10x^3 * √12y 3x^5y√3xy 10x^5y√6xy 3x^3y√3x^2y^2 10x^3y√6x^2y^2

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.

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Which accurately compares concave and convex lenses?