A particle in a harmonic oscillator potential with spring constant is known to be in a superposition of two energy eigenstates in which it is four times as likely to be found with energy as it is to be found with energy (a) Write down a properly normalized state function using harmonic oscillator energy eigenstates that has the above statistical property. (b) Calculate the energy expectation value for this state. (c) Calculate the expectation values for this state. (d) Use the result of part (c) to find the position-momentum uncertainty product for this state. Hint: This problem can best be solved using creation and annihilation operators. If you do that you will not have to do any actual integrations to calculate the expectation values.
Answers: 3
Physics, 22.06.2019 18:00, hannacarroll2539
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
Answers: 1
Physics, 22.06.2019 20:30, adrianayepez8
Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.
Answers: 3
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