HW2key

# HW2key - Homework 2 1 Two charges of 2q and-5q are placed...

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1 Homework 2 Step 1, formulas or related concepts. Step 2, known quantities. Charges +2q and -5q, The distance between the two charges is d. Step 3, direct application of the formulas/concept or the condition to form an equation. Since these two charges are in different signs, the point where the electric field is zero should be outside the area between these two charges. So I use ‘x + d’ instead of ‘x – d’ here. X is the distance from charge -2 q b) There is no other points not on the line, and where the strength of the electric is zero. Step 4, vector involved? yes. Step 5, unit in the final answer correct? Answered all were asked? and all questions answered. 2 ˆ i e i i i q k r = E r arrowrightnosp 1) Two charges of +2q and -5q are placed on a line. The distance between the two charges is d. (a) There is a point on the line where the strength of the electric field due to the two charges is zero. Describe where the point is, relative to the positions of the two charges. (b) Is there any point not on the line, where the strength of the electric

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