An automobile travels to the right at a constant speed of 45 mi/h. if the diameter of a wheel is 22 in., determine the velocities of points b, c, d, and e on the rim of the wheel. (round the final answers to one decimal place and the angle to its nearest whole number.)

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?