Question
At a marine animal park, Alison is looking through a glass window and watching dolphins swim underwater. If the dolphin is swimming directly toward her at $15 \mathrm{m} / \mathrm{s}$ how fast does the dolphin appear to be moving?
Step 1
In this case, Alison is observing the dolphin through air, but the dolphin is moving in water. The index of refraction for water is 1.33 and for air it's 1.0. Show more…
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