A ball is thrown directly up from the ground with an initial speed of 80 m/s. Will its speed on the way up ever be larger than 80 m/s?

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 occurs during a combustion reaction

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above