Question: Two very large parallel plates have charge per unit area +2.0 ?C/m 2 and -2.0 ?C/m 2 , respectively. A small grain of pollen of

Two very large parallel plates have charge per unit area +2.0 ?C/m² and -2.0 ?C/m², respectively. A small grain of pollen of mass m = 200 mg and charge q hangs by a slender thread as shown in Figure P17.84. If the thread makes an angle ? - 30^o with the vertical direction, what is q?

Figure P17.84

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