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Unformatted text preview: yoon (jey283) – Ch18h1 – turner – (56545) 1 This printout should have 37 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The vectors vectora and vector b both lie in the xz plane. The vector vectorc is equal to vectora × vector b. Which of these statements about vectorc must be true? 1. The z and x components of vectorc are zero. 2. The x and y components of vectorc are zero. 3. None apply. 4. The y and z components of vectorc are zero. 002 (part 1 of 6) 10.0 points A vector vector C of magnitude 5 lies along the x axis, and a vector vector D of magnitude 4 lies in the xy plane, 32 ◦ from the x axis (Figure 18.71). Find the magnitude and direction of ( A x , A y , A z ) if vector A = vector C × vector D . x y z 32 ◦ C = 5 D = 4 What is the magnitude and direction of A x ? 003 (part 2 of 6) 10.0 points What is the magnitude and direction of A y if vector A = vector C × vector D ? 004 (part 3 of 6) 10.0 points What is the magnitude and direction of A z if vector A = vector C × vector D ? 005 (part 4 of 6) 10.0 points What is the magnitude and direction of A x if vector A = vector D × vector C ? 006 (part 5 of 6) 10.0 points What is the magnitude and direction of A y if vector A = vector D × vector C ? 007 (part 6 of 6) 10.0 points What is the magnitude and direction of A z if vector A = vector D × vector C ? 008 (part 1 of 3) 10.0 points vector A = (− 4 , 6 , − 5 ) × ( 5 , − 3 , 9 ) What is A x ? 009 (part 2 of 3) 10.0 points What is A y ? 010 (part 3 of 3) 10.0 points What is A z ? 011 (part 1 of 3) 10.0 points vector A = vectorv × ˆ r . Find vector A if vectorv = ( 360 , − 480 , 338 ) m/s and ˆ r = ( . 577 , . 577 , − . 577 ) . What is A x ? Answer in units of m / s 012 (part 2 of 3) 10.0 points What is A y ? Answer in units of m / s 013 (part 3 of 3) 10.0 points What is A z ? Answer in units of m / s 014 (part 1 of 3) 10.0 points Consider the diagram below. The locations marked A, B, C, and D are all equidistant from the positive charge at the origin. Con sider the unit vectors pointing toward those locations and the cross products vectorv × ˆ r . yoon (jey283) – Ch18h1 – turner – (56545) 2 x y z vectorv B D A C + q Which of the following choices represents the directions of the magnetic fields at points...
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 Fall '11
 TURNER,J
 Electric charge, Dielectric, Yoon, ETOP

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