Physics Hw Problem 1

Physics Hw Problem 1 - both an x-component and a...

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Andy Gawne PHYS-0133-51 Problem 26.45 Problem: A thin rod with length L has a charge of Q. Find an expression for the electric field E at a distance x from the end of the rod. Give your answer in component form. Model: Visualize: The figure shows that each charge is along the designated y-axis. The rod is divided into a large number of rather small segments of charge Q. Each charge is positive and is acting upon a positive test charge P located x 2 distance along the x-axis. The charges are all a different distance r 1 from the test charge at an angle Θ from the x-axis. The resultant force E lies along this line acting upon the test charge P. Therefore, there is
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Unformatted text preview: both an x-component and a y-component to the force acting upon the test charge, but the resultant will always be below the x-axis. Solve: See Attached Sheet. Assess: The equation found makes sense, since both L and x are in the denominator. This means that as the length of the charge and the distance of the test charge increase, the force on the test charge becomes weaker. When the test charge is at an infinite distance from the charge, the force on the test charge becomes irrelevant....
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This note was uploaded on 09/27/2008 for the course PHYS 131-133 taught by Professor All during the Spring '08 term at Cal Poly.

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