(a) write down explicitly the properly normalized real-space wave function ψ(r, θ, φ; t) as state (4) evolves in time t.
(b) what is the expectation value e = ⟨hb⟩ of particle energy in this state. does this expectation value depend on time?
(c) find pressure p that the particle in this state exerts on the inner wall of the potential shell.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Which planet do you think would be easiest for humans to colonize some day?