Calculate the net force on your 0.50-cm2 eardrum that air exerts on the inside and the outside after you drive from denver, colorado (elevation 1609 m) to the top of pikes peak (elevation 4301 m). assume that the air pressure inside and out are balanced when you leave denver, the pressure inside the eardrum does not change, and that the density of the air is constant and is equal to 0.80 kg/m3.

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?