Derive the bohr's formula for 7 of a one-electron atom with a nucleus of atomic number z. (recall: (1) v is the energy of the photon emitted (in cm ) when the electron transits from state ny to state nu (ny < n2). (2) a nucleus of atomic number z has z number of protons. (3) since the nucleus is so much nassive than the electron, you can regard the nucleus as being a fixed center around which the electron revolves. in other words, you are not required to consider using the reduced mass concept in this problem.)

Which statement best describes how private industry decides where to spend the money on research and development

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.