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# Review1 - Assignment Previewer 9/16/11 9:25 AM...

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9/16/11 9:25 AM Assignment Previewer Page 1 of 12 http:[email protected][email protected] Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Description These questions are a faithful representation of the real test. In order to practice it you have 2 submissions per question, no time limit. In the real test the time limit is 1 hour, 15 questions, and only ONE submission. A video discussing the answers will be available on blackboard by Friday, September 16th. PHY-131-REVIEW-TEST1(not for grade) (2027902) Due: Sun Sep 18 2011 11:59 PM MST 1. - Question Details PHY112 15-02 [1546907] Two point charges, +2C and -1C, are arranged as shown. Where could a third charge of +1C be placed so that the net electrostatic force on it is zero? In region II only In region I only In region I or in region III In region III only In region I or in region II 2. - Question Details PHY112 15-03 [1547870]

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9/16/11 9:25 AM Assignment Previewer Page 2 of 12 http:[email protected][email protected] The circles in each of the figure represent charges of the same size, 20 C, which can be either positive or negative, according to the figure. At the numbered points there is a +5C charge. The distances between adjacent items are all 5 cm. Rank these arrangements from greatest to least on the basis of the strength of the force on the +5C charge. The direction of the force doesn’t matter. |F3| > |F2| > |F4| = |F5| > |F1| |F4| > |F2| = |F3| > |F1| = |F5| |F1| = |F2| = |F3| = |F4| = |F5| |F3| > |F4| = |F5| > |F2| > |F1| |F4| = |F5| > |F2| > |F3| = |F1| 3. - Question Details PHY112 15-19 [1547886] The figure shows arrangements of three fixed electric charges. In each arrangement, a numbered point is also identified. All of the charges are the same size, but they can be either positive or negative, as indicated. The charges and their associated numbered point all lie on a straight line. The distances between adjacent items, either between two charges or between a charge and the point, are all the same. The arrangements are very far from each other and their mutual interaction is negligible. Rank these arrangements from greatest to least on the basis of the strength (magnitude) of the electric field at the numbered point. (Note: for typographical reasons we use bolded characters instead of overhead arrows to indicate vectors) |E1| > |E5| > |E2| = |E3| = |E4| |E1| = |E2| > |E3| = |E4| = |E5| |E4| > |E3| = |E1| = |E5| > |E2| |E4| > |E3| > |E1| > |E5| > |E2| |E4| = |E3| > |E1| = |E2| = |E5|
9/16/11 9:25 AM Assignment Previewer Page 3 of 12 http:[email protected][email protected]

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## This note was uploaded on 10/02/2011 for the course PHY 131 taught by Professor Fuchs during the Spring '07 term at ASU.

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Review1 - Assignment Previewer 9/16/11 9:25 AM...

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