# HW 28 - benavides(jjb2356 – homework 28 – Turner...

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Unformatted text preview: benavides (jjb2356) – homework 28 – Turner – (59130) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A negatively charged particle moving at 45 ◦ angles to both the z-axis and x-axis enters a magnetic field (pointing into of the page), as shown in the figure below. × × × × × × × × × × × × × × × × × × × × × × × z x v × y vector B vector B- q Figure: ˆ ı is in the x-direction, ˆ is in the y-direction, and ˆ k is in the z-direction. What is the initial direction of deflection? 1. hatwide F = 1 √ 2 parenleftBig +ˆ - ˆ k parenrightBig 2. hatwide F = 1 √ 2 parenleftBig- ˆ - ˆ k parenrightBig 3. vector F = 0 ; no deflection 4. hatwide F = 1 √ 2 (+ˆ ı +ˆ ) 5. hatwide F = 1 √ 2 parenleftBig +ˆ + ˆ k parenrightBig 6. hatwide F = 1 √ 2 (+ˆ ı- ˆ ) 7. hatwide F = 1 √ 2 parenleftBig- ˆ ı- ˆ k parenrightBig 8. hatwide F = 1 √ 2 (- ˆ ı- ˆ ) 9. hatwide F = 1 √ 2 parenleftBig +ˆ ı- ˆ k parenrightBig 10. hatwide F = 1 √ 2 parenleftBig +ˆ ı + ˆ k parenrightBig 002 10.0 points A thin 1.87 m long copper rod in a uniform magnetic field has a mass of 44.3 g. When the rod carries a current of 0.267 A, it floats in the magnetic field....
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## This note was uploaded on 03/26/2012 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas.

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HW 28 - benavides(jjb2356 – homework 28 – Turner...

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