A 10.0 kg rock is at the top of a 20.0 m. tall hill. How much potential energy does it have? (g = 10m/s/s)​

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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.