Find the energy stored in a system of three equal point charges Q=2nc, arranged in a line with 0.5m superposition between them

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.