All Questions
4
questions
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Can the deflection of an electron beam create a Lorentz Force capable of propelling a spacecraft?
Please reference the conceptual drawing below of this spacecraft propulsion idea. In the vacuum of outer space, if a strong electron beam enters a strong magnetic field, as shown in the drawing, it ...
user217618
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votes
0
answers
189
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How strong would a magnetic field have to be to rotate a permanent ring magnet that is circumferentially-magnetized?
I recently asked an electrical engineer if the Earth's magnetic field would have any effect on a permanent ring magnet that is circumferentially-magnetized. This was his reply:
"There will be some ...
user202780
1
vote
1
answer
105
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Origin of physics laws [closed]
I am a math student and I have been self studying physics lately. I am going to take a course on electromagnetism this year, so I searched for books that are mathematically rigorous on that topic. And ...
11
votes
3
answers
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Experiment which shows that Newton's third law is not true for magnetic forces
I am just reading David Morins "Introduction to Classical Mechanics". He writes about Newtons third law the following:
It holds for forces of the “pushing” and “pulling” type, but it fails
for ...
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