Problem: What is the force on an electron in a CRT when it's moving at 2.5 105 meters/second perpendicular to a magnetic field of 1.5 teslas? The charge for an electron is -1.6 x 10-19 coulombs.
Part A: Enter the variable symbol for the quantity you need to find. Use your keyboard and the keypad to enter your
answer. Then click Done.
π φ αμ
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sin cos tan sec cot CSC
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Ovo lo sin cos'tan-' log in
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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