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Minimum Time The conditions are the same as in Exercise 41 except that the man can row at
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Calculus (MindTap Course List)
- Force The force F (in pounds) on a person’s back when he or she bends over at an angle from an upright position is modeled by F=0.6Wsin+90sin12 where W represents the person’s weight (in pounds). (a) Simplify the model. (b) Use a graphing utility to graph the model, where W=185and090. (c) At what angle is the force maximized? At what angle is the force minimized?arrow_forwardTotal Internal Reflection When light passes from a more dense to a less dense medium-from glass to air, for example-the angle of refraction predicted by Snells Law see exercise 57 can be 90 or large. In this case the light beam is actually reflected Bach into the denser medium. This phenomenon, called total internal reflection, is the principal behind optics. Set 2=90 in Snells Law, and solve for 1 to determine the critical angle of incidence at which total internal reflection begins to occur when light passes from glass to air. Note that the index of refraction from glass to air is reciprocal of the index from air to glass.arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageTrigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning