During which changes of state do atoms overcome the attractive forces between them?

How would doubling the made of an object change the objects potential energy

Aphysical change is a change in the size, shape,, or stafe of matter true or 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.