Question

A double charged layer consisting of two parallel and ideal uniformly charged planes is given, as shown in the figure. Let the charge density per unit of surface of each floor equal to

\sigma = 2.1 \cdot 10^{-15} C/\mathrm{m}^2.

where the upper floor is positively charged and the lower one negatively charged.

Consider a particle of mass m = 3.0 \cdot 10^{-18} kg and a charge q = 4.0 \cdot 10^{-15} C hanging on an inextensible ideal wire of lenght l = 0.5 m in the region between the two charged planes.

Ignoring the weight force, calculate the period of the small oscillations of the particle (\varepsilon_0 = 8.85 \cdot 10^{-12}\mathrm{C^2/N m^2}).

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Answer #1

Given:. l=0.5m So 261810-15 cm2 9 = 4.0X10 m: 3:0 x 10-18 kg - IS بوک 2:1X10-15 to Electric field (E) A 8,85 X 10-12 E = 0:23

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