Which one of Newton's three laws of motion deals with action-reaction?

Which statement best describes how private industry decides where to spend the money on research and development

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.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.