Danny is standing on a scale in an elevator on the top floor. The elevator begins to accelerate downward at a rate of 2.5 m/s2. If Danny has a weight of 450 N, what will
the scale read in Newtons?

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.

Atomic nuclei of almost all elements consist of

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?