The measurement of an electron's energy requires a time interval of 1.2×10^−8 s . what is the smallest possible uncertainty in the electron's energy?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Select the correct answer. what does the process of natural selection involve?

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?