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WVU PHYS 102 - Recap of Exam 3
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PHYS 101 1st Edition Lecture 29Outline of Last Lecture I. Snell’s Law Continued…II. Practice ProblemsOutline of Current Lecture III. Recap of Equations on Exam IV. Practice Exam ProblemsCurrent Lecture III. Recap of Equations on Exam A. Chapter 22 n1 sin 1 = n2 sin 2n = c/vChapter 21 Distance = speed X time  = c/f in vac/air  = v/f in medium E = hf P = I = P/A ; where A is 4r2Lesson 22.6 will not be on the exam. IV. Practice Exam ProblemsA. #2 Air - icen1 sin 1 = n2 sin 2These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.1 sin(30) = 1.31 sin(2) 2 = 22.4Ice-water3: angle of refraction in water n1 sin 1 = n2 sin 2nice sin (22.4) = nwater sin 31.31 sin(22.4) = 1.333 sin 3 3 = 22.0#4 a)  = c/f = (3 X 108)/(6 X 1014) = 500 nm b) n = c/vin glass 1.5 = 3 X 108 / V  V = 2 X 108 m/s ; this is 2/3 of c Frequency does not change. in glass = vin glass/fin glass = (2 X 108)/(6 X 1014) = 333 nm #6 n1 sin 1 = n2 sin 21 sin  = 1.7 sin (30)  =


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WVU PHYS 102 - Recap of Exam 3

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