71. A potential difference U1 = 0.7 kV is applied to the plates of a flat air condenser with a distance between them of d = 3 mm and an area of S = 100 cm2. Glass was introduced into the space between the capacitor plates with the power source turned on (ε = 7). Determine: 1) the potential difference U2 between the plates after making the dielectric; 2) the electric capacitance of capacitors C1 and C2 before and after making the dielectric.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)