A cart of mass m = 0.25 kg rides on an air track that is tilted at an angle θ = 3° from the horizontal show answer Incorrect Answer What is the magnitude of the cart’s acceleration in m/s2?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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.