4. [-11 Points] SERCP11 22.3.P.009. ASK YOUR TEACHER PRACTICE ANOTHER An underwater scuba diver sees the Sun at an apparent angle of 29.0\" from the vertical. What is actual direction of the Sun? \" (above the horizon) Need Help? 5. [-l1 Points] SERCP11 22.4.P.028. ASK YOUR TEACHER PRACTICE ANOTHER A certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 440 nm and an index of 1.630 for red light of wavelength 670 nm. If a beam containing these two colors is incident at an angle of 30.0\" on a piece of this glass, what is the angle between the two beams inside the glass? ,7 0 Need Help? 6. [-l3 Points] SERCP11 22.7.P.034. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For light of wavelength 589 nm, calculate the critical angles for the following substances when surrounded by air. fused quartz l ethyl alcohol sodium chloride Need Help? 7. [-l1 Points] SERCP11 22.7.P.036.MI. ASK YOUR TEACHER PRACTICE ANOTHER A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 25.5\" and the angle of refraction is 15.5", nd the critical angle for the liquid when surrounded by air. ' a