A beam of light strikes a sheet of glass at an angle of 57.0 with the normal in air. You observe that red light makes an angle of 38.1 with the normal in the glass, while violet light makes a 36.7 angle. (a) What are the indexes of refraction of this glass for these colors of light

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.