104 quiz 08: Reflection and refraction

  1. ____________________ A clapper stays in synch with the echo of the clapping. During ten seconds of clapping there were 40 claps. The echo flight distance out to the building and back was 87 meters. Determine the speed of sound based on this data.
  2. What is presbyopia?
  3. What is the typical treatment for presbyopia?
  4. On the diagram below, draw the path of a light ray from the penny to the eye.

Image depth versus object depth measurement diagram for physical science laboratory Eye eye water objects (coin?) container air water penny opaque container penny

  1. spear fishing Pacific islander __________________ When spear fishing in shallow water on the reef, does the experienced spear fisher aim above or below the fish that he sees in the water?