You're holding your dog's leash as the dog pulls on the leash at an angle to the ground. You move forward. What fraction of the dog's force does work on you?
O A. All of the dog's force
o B. The part of dog's force that acts in the horizontal direction
O C. The part of dog's force that acts in the vertical direction
O D. None of the dog's force

PLS HELP

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.