Acceleration

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Acceleration 14E. Sketch a graph that is a possible description of position as a function of time for a particle that moves along the x axis and. at   = 1 s, has (a) zero velocity and positive acceleration; (b) zero velocity and negative acceleration; (c) negative velocity and positive acceleration: (d) negative velocity .and negative acceleration. (e) For which […]

QUESTIONS

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QUESTIONS 1. Which of the following relationships between the acceleration a and the displacement x of a panicle involve SHM: (a) a = 0.5x, (b) a = 400×2, (c) a = -2Ox, (d) a = -3×2? 2. Given x’ =·(2.0 m) cos(5t) for SHM and needing to find the velocity at t = 2 s, should you substitute for […]

QUESTIONS

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QUESTIONS 1. Which of the following relationships between the acceleration a and the displacement x of a panicle involve SHM: (a) a = 0.5x (b) a = 400×2, (c) a =  2Ox, (d) a = -3×2 2. Given x’ =·(2.0 m) cos(5t) for SHM and needing to find  he velocity at t = 2 s, should you substitute for […]

busincs

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busincs TIlt’ term ‘valuation’ implies tlu- task of l’Mimatinj.l the worth/value or an ;I~~t, a security or a busincs», ‘J11L’ price an mvestor or ‘a firm (buyer) is willinJ( In pay to purd\;iso,,’ a sfll,’Cifk asset/ security would he related to this value. Obviously, two different buyers may not have the same valuation for an […]

EXERCISES PROBLEMS VECTOR

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EXERCISES PROBLEMS VECTOR  15E. Vector has a magnitude of 5.0 m and is directed east. Vector  b has a magnitude of 4.0 m and is directed 35 west of north. What are (a) the magnitude and (b) the direction of  b? What are (c) the magnitude and (d) the direction of b  o? (e) Draw a vector diagram […]

EXERCISES PROBLEMS VECTORS

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EXERCISES  PROBLEMS VECTORS Solution is in the Student Solutions Manual. www Solution is available on the World Wide Web at: http://www.wiley.com/college/hrW It Solution is available on the Interactive Learning Ware. Adding Vectors Geometrically 1E. Consider two displacements, one of magnitude 3 m and another of magnitude 4 m. Show how the displacement vectors may be combined to […]

REVIEW & SUMMARY VECTORS

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REVIEW & SUMMARY VECTORS Scalars and Vectors Scalars, such as temperature, have magnitude only. They are specified by a number with a unit C  and obey the rules of arithmetic and ordinary algebra. Vectors, such as displacement, have both magnitude and direction (5 m, north) and obey the special rules of vector algebra. Adding Vectors Geometrically Two vectors […]

PROBLEM SOLVING TACTICS

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PROBLEM SOLVING TACTICS Tactic 5: Common Errors with Cross Products Several errors are common in finding a cross product. (I) Failure to arrange vectors tail to tail is tempting when an illustration presents them head to tail: you must mentally shift (or better, redraw) one vector to the proper arrangement without changing its  orientation. (2) Failing to use […]

Sample Problem

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Sample Problem       SOLUTION: The Key Idea is that when two vectors are in unit vector notation. we can find their cross product by using the distributive  law. Here that means we can write       We next evaluate each term with  determining the direction with the right hand rule. For the first […]

Sample Problem

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Sample Problem Vector if lies in the plane has a magnitude of  units. and points in a direction 250° from the positive direction of x. Also vector b has a magnitude of ,12 units and points along the positive direction. What is the vector product c = a x b? SOLUTION: One Key Idea is that when […]