Recent content by Prannu

I knew magnetism comes from the net sum of election spins, and orbital magnetic moments for all the atoms of the solid, but was wondering: if for a single atom, there is a non zero spin for the electrons, what orientation is the magnetic field in for the atom? I will look up the terms you...

Well, sort of. So you're saying that even if one left over electron exists (without a spin partner), it's enough to cause a magnetic field in the atom?

What parts of the atom would be the North/South pole then?

If a magnet is cut in half, it is still a magnet (dipole). If the magnet is continuously cut in half until it is only an atom, it still remains a magnet. My question is, what part of the atom generates the magnet field? I understand that magnets form primarily from the spin and angular momentum...

Oh, I see now. I was making a mistake in approximating the time interval: it was too large, which is why the speed changed also. Because dt approaches an infinitesimally small value, the delta-v has 0 contribution towards the speed, and therefore, the speed is constant. However, this dv (or...

Yes, all light emitted from a campfire or from fireflies would have the same speed. However, the light itself may not have the same amount of energy, depending on the source. Hence, there is a difference in frequency (color) and/or brightness (intensity) of the light emitted from the sun versus...

Yes, I completely agree with you in that the speed of the rock is fixed in uniform circular motion. I also agree with you in that acceleration is only causing a change in the direction only of the velocity. However, I still do not understand why, at any instant, the acceleration should cause...

But why should the rock's velocity change in direction only? As long as there is acceleration, over a given period of time, dv = a*dt, indicating both a directional and magnitude change in velocity.

If you are twirling a rock around your head with a rope (assuming it is uniform circular motion), then the only acceleration that is acting is radial. So if you take a look at the rock at any given instant, its velocity is perpendicular to its acceleration. My question is, why does the rock not...

Thank you

I'm not exactly sure whether this qualifies as quantum mechanics, but it has to do with how atoms work: suppose a glass plate falls and breaks (into two pieces, let's say, to keep things simple) on the floor. Is it possible to put it back together so that there is no longer a crack between the...

Also note that if the conductor is in electrostatic equilibrium, then there is no (net) electric field on the charged particles inside (hence a constant electric potential). This means that if the conductor is not in electrostatic equilibrium, then there is a (net) electric field on the charged...

Thanks!

All right, thank you!

Thanks :) Do you know how to quote previous posts when you want to reply to a post?