The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 1.03 m/s and moves down the wave until her speed reaches 11.6 m/s. The drop in her vertical height is 1.73 m. If her mass is 40.8 kg, how much work is done by the (non-conservative) force of the wave?

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

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 force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration