10. [-/3 Points] DETAILS For light of wavelength 589 nm, calculate the critical angles for the following substances when surrounded by air. polystyrene benzene flint glass Need Help? Read It Submit Answer 11. [-/1 Points] DETAILS MY NOTES PRACTICE ANOTHER A boy floating on a pond watches a fish swim away from him as in the figure below. If the fish is 2.67 m beneath the surface, for what maximum distance d (in m) will he be able to see the fish? Neglect the height of the boy's eyes above the water. HINT 2.67 m m Need Help? Read It Submit Answer 12. [-/1 Points] DETAILS MY NOTES PRACTICE ANOTHER A jewel thief hides a diamond by placing it on the bottom of a public swimming pool. He places a circular raft on the surface of the water directly above and centered over the diamond, as shown in the figure below. If the surface of the water is calm and the pool is h = 1.86 m deep, find the minimum diameter of the raft that would prevent the diamond from being seen. m -d- Raft Diamond