3. Three lightbulbs are connected in a series. A switch is placed between the first lightbulb and the second lightbulb. If that switch is opened, what happens to each of the three lightbulbs?
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Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

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

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes