6questions:
what percentage of the earth is covered by water?
did dinosaur...
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6questions:
what percentage of the earth is covered by water?
did dinosaurs and humans ever exist at the same time?
what is darwin's theory of the origin of species?
why is the sky blue?
what causes a rainbow?
why does a year consist of 365 days and a day of 24 hours?
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Physics, 21.06.2019 16:10
At what point the certain object feels zero garvitational force between earth and the moon. take the required information from the book.required: distance away from earth or moon
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Physics, 22.06.2019 00:20
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
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Physics, 22.06.2019 12:00
This is for my 8th grade science class, i really don’t understand. can someone me? , lol.
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