Recent content by parsa418

Thank you tiny-tim. Sorry for the late reply. I was travelling.

Hi From what I understand ferromagnetic materials have domains that contain magnetic dipoles that are almost all parallel to each other. However these domains have random directions. Under a magnetic field the domains in the ferromagnetic material that are magnetized in the field direction...

I see how that makes it nonconservative. Thank you. You at least have given me a reason for why the force direction being perpendicular to the v-B plane would have made the most sense (or at least special) because it would have violated energy conservation if it wasn't in that direction. Thank you

A force component along the magnetic field would lead to a non-conservative force, as magnetic field lines are closed -> energy is not conserved. Thank you for your reply. Can you elaborate a little more on the reason above. I don't understand why the magnetic field lines being closed would...

Hi I have always been very curious if anybody knows why the magnetic force on a moving charged particle in a magnetic field is always perpendicular to the plane containing the magnetic field's vector and the charged particles velocity vector. Any help would be greatly appreciated. Thanks...

Hi I'm trying to decide what major I want to choose, and I would appreciate it if any mechanical engineers could tell me what they do at their work. I want to get a general idea of what type of jobs mechanical engineers usually get or could potentially get. Thank you

Thanks

I have a pretty good idea what bioengineers and electrical engineers do day to day, but I don't have a good idea what mechanical engineers do. Could you tell me how the day to day tasks of a mechanical engineer is? Thanks for the prompt reply

Hi, I'm trying to decide between these three majors. I'm in community college right now and plan on transferring next year God willing. I have taken almost all my math, physics, and chem courses and a bio class. I have also taken the following engineering classes at my college to help me...

Then how did Newton exactly observe this. I mean there weren't any force sensors at the time or was there something like it?

Reason behind inverse proportionality of R^2 to force of attraction Hi Could anyone please tell me how did Newton prove that the force of attraction between two objects is inversely proportional to the distance between them squared. I know that if you use Kepler's law that the T^2=r^3 you...

Could anyone prove the moment of inertia of a thin walled hollow sphere using the y^2 + x^2 = r^2. I have only studied up to single variable calculus. I can take regular integrals but not multivariable integrals. I don't want to use the angle method or any polar coordinate systems except in the...

How did Kepler exactly prove that the period squared is proportional to the radius cubed? If he didn't prove it. Then how is it proven?

Two Questions: Could you prove why the period squared equals to the radius cubed and do all objects rotate around each other?

Thank you very much