The weather forecaster predicts that today’s high will be 70. Which temperature scale is being used? What would be the corresponding temperature on the other two scales? “It was so cold yesterday that the temperature only reached 275.” Which temperature scale is being used? What would be the corresponding temperature on the other two scales?

“Today’s temperature of 42 in Chicago set a record high for the month of August.” Which temperature scale is being used? What would be the corresponding temperature on the other two scales?

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

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Why do astronauts in the space shuttle weigh less?