Which expression is equivalent to StartFraction (4 p Superscript negative 4 Baseline q) Superscript negative 2 Baseline Over 10 p q Superscript negative 3 Baseline EndFraction? Assume p not-equals 0, q not-equals 0.

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.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

What is friction? how does it affect the motion of an object?