Recent content by MoAli

Given a wave function $$\Psi(r,\theta,\phi)=f(r)\sin^2(\theta)(2\cos^2(\phi)-1-2i*\sin(\phi)\cos(\phi))$$ we are trying to find what a measurement of angular momentum of a particle in such wave function would yield. Attempts were made using the integral formula for the Expectation Value over a...

well, that still is a wrong answer, the thing is the line about which the rotation occurs is not z axis, if it was then yes perpendicular distance is the radius.

Homework Statement the moment of inertia of A cylinder of height 2h radius (a) and uniform mass density ρ about a line x=y=z using multiple integration. Homework Equations I=ρ∫s^2*dV where the integral is over the volume V of cylinder and s is the perpendicular distance to the axis of...

Homework Statement Attached the original script. Sorry but I don't know how to type in latex so its easier to attach photos. Homework Equations ET=Σ6n=1En The Attempt at a Solution I attached what I was able to do, I know there is a mistake is in part (b) that I can't locate and any help or...

Homework Statement Shown in the photo attached. 2. Homework Equations ∫V r2Sinθdθdφdr in spherical coordinates ∫V dxdydz in cartesian coordinates equation of a sphere x2+y2+z2=r2 The Attempt at a Solution In this case y=(y-2): sphere displaced on the y-axis. and since it is bound by all...

Yeah still trying to learn latex, anyway, where the question asks to prove momentum expectation value is zero without integrals I get stuck, I got <p^2> = \frac{12/h^2}{13 } which still doesn't make sense to me, the units don't work!

Homework Statement See Image, Sorry Its easier for me to attach images than writing all equation on the forum's keyboard! I only need to check if I'm working it out correctly up to the position expectation value because I don't want to dive in the rest on wrong basis ! Homework Equations...

Homework Statement See Image The bit about Spectral lines, I couldn't explain why[/B] Homework Equations ΔEΔt≈h The Attempt at a Solution I expected the histogram to peak at the given mass in question and to have a width of about 0.08 MeV calculated as ΔE from the Energy-time uncertainty...

Homework Statement I encountred a question that says : Assume that gravitational interactions between galaxies in groups lead to random galaxy velocities of 300 km/s At what distance would the redshift predicted by Hubble's law dominate over that produced by individual velocities? and what is...

Hello, I was wondering if someone could explain to me what does it meant that a beta particle has a range of energies ? Thanks

Hey Guys, Im desperate for help on that topic. I have no idea how the device work so an explanation would be appreciated; if someone can give me a hint on solving the problems when there are two cells in a circuit with different emf and the question says that when the potentiometer is at...

Hey Guys, A few days ago I Asked for advice to help me model the serve and many were very useful in the experiment and i appreciate it. The result I got using the application tracker showed that the speed of the ball was decreasing along its path which is not what i expected, i mean the tennis...

Hey Guys, I know its an Odd Question but i have an assignment where i should be doing a tennis serve and taking a video of it, importing it on laptop and draw graphs and make conclusions about its position with time and compare my results with theories, so any suggestions on how to do that, in...

Hello everyone, i was looking for suggestions on the beat book in the topic of kinetic theory, i need a book with deep explanation and covers everything from A to Z. I would appreciate it if someone could post a link for their suggestion on amazon or something. thanks in Advance.

I was wondering if protons and electrons have different description in the terms of quarks if they're in Dark Matter??