Sand is poured at a constant rate of 75.5 g/s into a 0.540-kg bucket resting on a scale. if sand is landing in the bucket with a speed of 3.70 m/s, determine the scale reading when there is 0.550 kg of sand in the bucket.

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.