# The four cases below all show a ball with a charge of -3q at the top...

###### Question:

The four cases below all show a ball with a charge of -3q at the top right corner of a square. Then there is either one, two, or three additional charged balls, each ball located at a different corner of the square. For parts (b) and (c), use q = 3.10 x 10-6 C, and L = 20.0 cm, as well as k-9.00 x 109 N·m2/C2. -3q -24 -24 (a) Rank the cases based on the magnitude of the net electrostatic force experienced by the ball of charge-3q, from largest to smallest. (Use only ">"or"=" symbols. Do not include any parentheses around the letters or symbols.) (b) In Case C, calculate the magnitude of the net electrostatic force acting on the ball of charge -3 (c) In Case D, calculate the magnitude of the net electrostatic force acting on the ball of charge -3q

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