You place the spring vertically with one end on the floor. You then lay a 1.60-kgkg book on top of the spring and release the book from rest. Find the maximum distance the spring will be compressed.

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.

Why should seat belts not be mandatory quick plz

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.