When two or more capacitors are connected in parallel across a potential difference
A) each capacitor carries the same amount of charge.
B) the equivalent capacitance of the combination is less than the capacitance of any of the capacitors.
C) the potential difference across each capacitor is the same.
D) All of the above choices are correct.
E) None of the above choices are correct.
C
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The equation below is the solution to a problem.
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The best physical representation of this equation is
A. a sphere of 2.00-kg mass under a 45.2-N tension when at the bottom of a vertical circle. B. a sphere of 2.00-kg mass under a 45.2-N tension when at the side of a vertical circle. C. a sphere of 2.00-kg mass under a 45.2-N tension when at the top of a vertical circle. D. a sphere of 2.00-kg mass at any point on a horizontal circle. E. a 2.00-kg gecko running on the ceiling with a speed of 8.00 m/s.
Note the expression: y = A/x3 . Which statement is most consistent with this expression?
a. y is less than A. b. If x is halved, y is multiplied by eight. c. If x is doubled, y is multiplied by a factor of 8. d. y is greater than x.
A bone is dug up and analyzed and found to contain 1/16--one sixteenth--of the amount of 14C radioactivity of normal bones in living bodies. The half-life of 14C is 6000 years. Roughly how long has the individual been dead?
A) 24, 000 years B) 6000 years C) 30,000 years D) 36,000 years E) Impossible to tell from the given information.
Barbara travels 20. km Northward, then travels 40. km Eastward, then continues for 50. km in a Southward direction. What displacement will now take her back to her initial position?
A) 30. km Westward + 40. km Northward B) 50. km Northwest C) 40. km Westward + 30. km Northward D) 30. km Northward + 30. km Westward E) 40. km Eastward + 30. km Southward