Questions tagged [electromagnetism]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
-1
votes
0answers
46 views

With a sufficiently diamagnetic material, is it possible to create thrust from a star to propel a spacecraft?

This is a showerthought after the NYtimes "tic tac" video that I've had for a while and am looking for a specific answer. Assuming a perfectly diamagnetic material exists, could an object ...
2
votes
0answers
32 views

Can Lorentz forces partially cancel centrifugal forces?

If we had a tidally stabilised skyhook (https://en.wikipedia.org/wiki/Space_tether#/media/File:Skyhooks.gif) with electric charge and with a vector of force aiming towards the center of the Earth, ...
5
votes
1answer
138 views

What is the formula for the gain factor of a ferromagnetic core for a torquer coil rod?

I am an undergraduate who is currently designing an actuation system for a CubeSat, more specifically a PCB magnetorquer. (with 2 ferromagnetic core coils and one air core) I made an excel sheet that ...
1
vote
0answers
31 views

Velocity of a charged particle due to electric field in relativistic limit [closed]

I am trying to calculate the velocity of a charged particle moving through a constant E field. I understand that I can set $\frac{1}{2}mv^{2} = qV$ to give $v = \sqrt{\frac{2Vq}{m}}$ However, im not ...
2
votes
1answer
247 views

Space-borne electromagnetic lens to focus energetic charged particles

Is it feasible to build a spaceborne electromagnetic lens (such as but not limited to a solenoid) of large area (perhaps as large as the ring at the supercollider at CERN) to gather and intensify ...
2
votes
1answer
218 views

How strong is Sun magnetic field on Moon surface? And on Mars?

I wan to calculate the voltage difference generated by sun EM Field on a wire placed on Moon or Mars surface, but I can't find consistent data about solar EM Field. I found different values: The ...