Show that the general energy state superposition y(t)) = ece-1e,1/4|en) satisfies the schrödinger equation, but not the energy eigenvalue equation

What do we mean by the event horizon of a black hole?

Athird point charge q3 is now positioned halfway between q1 and q2. the net force on q2 now has a magnitude of f2,net = 5.861 n and points away from q1 and q3. what is the value (sign and magnitude) of the charge q3?

Based on the image below what would an observer on the nighttime side of earth observe?