College Physics: A Strategic Approach Technology Update, Books a la Carte Plus Mastering Physics with Pearson eText -- Access Card Package (3rd Edition)
3rd Edition
ISBN: 9780134201979
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 1CQ
Light can pass easily through water and through air, but light will reflect from the surface of a lake. What does this tell you about the
Expert Solution & Answer
To determine
To explain: Speed of light in air and water.
Explanation of Solution
As light passes from air to water, it changes from one medium to another. In terms of refractive index, water is denser than air.
Hence, the wave speed of light decreases in water. Therefore, some light waves undergo refraction, while some of them reflect back from the plane of water.
Conclusion:
Hence, the speed of light in air and water is described.
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The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
Chapter 16 Solutions
College Physics: A Strategic Approach Technology Update, Books a la Carte Plus Mastering Physics with Pearson eText -- Access Card Package (3rd Edition)
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