âWhere long-term costs are considered, roundabouts eliminate hardware, maintenance and electrical costs associated with traffic signals, which can cost between $5,000 and $10,000 per year.âEngineers also consider how the improvement affects the capacity of the intersection, and how the improvement affects traffic flow.Where long-term costs are considered, roundabouts eliminate hardware, maintenance and electrical costs associated with traffic signals, which can cost between $5,000 and $10,000 per year.
Show transcribed image text An electron is traveling through a region between two metal plates in which there is a constant electric field of magnitude E along the y direction as sketched in the figure below. This region has a total length L, and the electron has an initial speed v0 along the x direction. (Use the following as necessary: m and e for the mass and charge of the electron respectively, E, L, v0.
Electron current is the flow of electrons and, since electrons have the property of negative electric charge, an electron current is necessarily a flow of charge, i.e., an electric current (in the opposite direction of the electric current).lectric charge must be carried be something. The direction of flow of positive charge is taken to be the direction of electric current. Thus, a flow of negative charge contributes to an electric current in the opposite direction.