A capacitor consists of two charged disks of radius 3.1 m separated by a distance s2 mm (see the figure). The magnitude of the charge on each disk is 50 pC. Consider points A, B, C, and D inside the capacitor, as shown in the diagram. The distance s- 1.6 mm, and the distance s2- 0.8 mm. (Assume the +x axis is to the right, the +y axis is up, and the +z axis is out.) R>> sA (a) What is the electric field inside the capacitor? N/C (b) First, calculate the potential difference Ve- VA- What is Al along this path? Ai - <-0.00160,0,0 > What is Ve- VA? Ve- VA - volts (c) Next, calculate the potential difference Ve- Ve What is Al along this path? Ai - <0,- .000800,0> m What is Vc- Ve? Ve - V -0 v volts (d) Finally, calculate the potential difference VA - Vc- What is Al along this path? Ai - <0.00160,.000800,0 > What is VA- Vc? VA - Vc -L volts

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Water constitutes about 70% of earth.  Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

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An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.