A container holds gas at a constant pressure of 5100 Pa. A machine then expands the walls of the container from an initial volume of 150 m3 to some unknown final volume. If the machine released 290 kJ of heat into the gas, and the change in internal energy is 120 kJ, what is the final volume

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?