Solving a problem in physics section 1 point 13 electro

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13. The distance between the plates of a plane capacitor is d = 1 cm, the potential difference U = 200 V. Determine the surface density ? 'related charges ebony plate (? = 3), placed on the lower plate of the capacitor. The plate thickness d2 = 8 mm.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use the Formula Editor