Consider an electron moving in a constant homogeneous magnetic field b b there are no other potentials present a) write down the hamiltonian (hint: canonical momentums a, where a is the vector potential b) show that if one chooses the vector potential that only has y-component, the general solution of the wave function has plane-wave form in two of the three directions. c) find the allowed energy levels

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors

In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?

Explain teen pregnancy from a sociological perspective.