6. A rod with a uniform linear charge density A is bent into a half-circle of radius R. A point charge -q is placed at the center of the circle. (The rod and the point charge are each held fixed in place.) a) What is the net charge on the half-circle? b) Set up an integral to find the force on the point charge due to the half-circle. (Remember that force is a vector.) c) In which direction does the force point? How can you tell this without doing any calculation?
6. A rod with a uniform linear charge density A is bent into a half-circle of radius R. A point charge -q is placed at the center of the circle. (The rod and the point charge are each held fixed in place.) a) What is the net charge on the half-circle? b) Set up an integral to find the force on the point charge due to the half-circle. (Remember that force is a vector.) c) In which direction does the force point? How can you tell this without doing any calculation?
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