Velocity; Space; Direction etc ...

Please assist me with the attached questions. Thanks. Attached: 1) Galaxy A is found to be receding from us with a speed of 0.8c. Galaxy B I found to be receding from us with a speed of 0.4c. (a) What is our velocity as seen from galaxy A? (b) What is velocity of galaxy B as seen from galaxy A, if both are seen in the same ...continues

Relativity

A satellite is at rest in space when destroyed by a hostile alien space ship. One piece that is 100 kg floats away at a speed of 0.80C. Another piece floats away with a speed of 0.90C away from the explosion in the opposite direction. What is the mass of the piece that flew away in traveling at 0.90C. Determine this two way ...continues

Binding Energy

I would like to have someone show me step by step how to calculate the binding energy for deuterium and tritium.

radial wave function stuff

This question comes from the second edition of Griffiths' Introduction to Quantum Mechanics. It is question 4.46 (a) Use this reursion formula: c_j+1 = (2(j+l+1-n)*c_j)/((j+1)(j+2l+2)) to confirm that when l=n-1 the radial wave function takes the form R_n,n-1 = (N_n)*r^(n-1)*e^(-r/(na)) (b) calculate and ...continues

Perturbation of a negative potential time dependent problem

Hello, I am trying to calculate the probability that the n = 3 state will be excited at t = infinity for the case where b<<< a. and to show that for any value of b only the odd n states will be excited at t = infinity. my initial conditions and setup are: V(x,t) = Vinit(x) exp(-lambda times t) where I have a negative ...continues

Quantum Mechanics: Time Indep perturbation negative potential in an infinite sq well

Hi, This is a problem that I have got a solution for but would really like to have a second check to make sure that I have done it correctly. I have a negative potential, -V in the center of an inifinite square well. The well extends from -a to +a and the unperturbed wevefunctions are: Si sub n (x) = sq root ...continues

Quantum Mechanics Review

Please assist me with the attached quantum mechanics questions *4a not completed in solution.

free electron wave function

A free electron has a wave function given by ψ = A sin(1.0 x1010 x). x is given in meters. What are its a) wavelength b) momentum c) speed d) kinetic energy e) what would the wave function of a free proton traveling at the same speed be?

energy levels of electron

Determine the lowest four energy levels and wave functions of an electron trapped in an infinitely deep potential well of width 2.0 nm. What is the longest wavelength of light emitted by this system?

Water at 50 degrees C can be obtained by mixing together water, ice and steam

Water at 50 degrees C can be obtained by mixing together which one or more of the following combinations? Which of the others would have final temperatures higher than 50 degrees C and which lower than 50 degrees C? What will be the final temperatures for these combinations? a. 1 kilogram of ice at 0 degrees C and 1 kilogr ...continues