A 0.00275 kg air-inflated balloon is given an excess negative charge q₁ = -3.25 × 10-8 C by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 0.0600 m to make the balloon float. In order for this to occur, what polarity of charge must the rod possess? negative proton positive neutral How much charge 92 does the rod have? Model the balloon and rod as point charges. The Coulomb force constant is 1/(4€) = 8.99 × 10⁹ N·m²/C², and the acceleration due to gravity is g = 9.81 m/s². 92 = -4.00 x10 -8

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Dielectric Constant Of Water

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

Electrostatic Potential and Capacitance

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.