A qué se debe el movimiento de las moléculas que se da en una olla de agua en el fuego

When an object is heated it contracts. a. true b. false

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.

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr