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e1A_121_s06txt - exam 1 spring 06-kg 1 Two charges Q1 and...

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exam 1 spring 06 1 0 12 . -kg . . . 1. Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of the charges are doubled and their separation is also doubled, then what happens to the electrical force between these two charges? A) It is quadrupled B) It changes by a factor of 3 C) It is doubled D) It remains the same E) It changes by a factor of 8 1D 2. Four equal charges are located at the corners of a square of side d. If the magnitude of each charge is doubled, then what happens to the resultant force on each charge? A) It remains the same B) It is doubled C) It is quadrupled D) None of the other choices is correct E) It changes by a factor of 8 2C 3. Three equal charges are at three of the corners of a square of side d. A fourth charge of equal magnitude is at the center of the square as shown in Figure. Which of the arrows shown represents the net force acting on the charge at the center of the square? 4. Four point charges of equal magnitude but varying signs are arranged on the corners of the square of side d as shown in Figure. Which of the arrows shown represents the net force acting on the charge at the upper right hand corner of the square?
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