(5%) Problem 9: You observe a fish through the flat side of a large saltwater aq
ID: 2032164 • Letter: #
Question
(5%) Problem 9: You observe a fish through the flat side of a large saltwater aquarium. The fish appears to be swimming at a speed of II cm/s directly toward you. The index of refraction of the saltwater is 1.35 G> What is the actual speed of the fish, in centimeters per second? Grade Summary Deductions Potential actual 0% 100% Submissions Attempts remaining: 5 (5% per attempt) detailed view ( tan0 t acos0 sinh0 cosO sin cotan0 asin) atan)acotan() cosh0 n cotanh0 Degrees O Radians 0 Submit Hint I give up! Hints: 5% deduction per hint. Hints remaining: 3 Feedback: 5% deduction per feedback Submission History Answer Hints Feedback Totals 0% Totals 0% 0% 0%Explanation / Answer
apparent depth, y' = real depth/n
y' = y/n
dy'/dt = (dy/dt)/n
v' = v/n
v = v'*n
= 11*1.35
= 14.9 cm/s <<<<<-----Answer
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