What is the electrical power when the current is 25 amps and the voltage is 10 volts?

What is the relationship between the direction of motion of the balloon and the wind currents

What does si stand for,when referring to a system of measurement

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?