All Questions
18
questions
3
votes
1
answer
445
views
Confusion with curl of Lorentz magnetic force
Since the magnetic force is a no work force, $dW=\vec F\cdot d\vec r=0$ for $\vec F(\vec r)=q(\vec v(\vec r) \times \vec B(\vec r))$, therefore $\oint \vec F \cdot d\vec r=0$ by Stoke's theorem. ...
2
votes
0
answers
117
views
Consistency of equation with special relativity?
The following is the equation which, I want to know, if it is valid in relativistic domain. Consider two equal charges moving in same direction with velocity $v$ and charge $q$ at a separation of $d$....
0
votes
1
answer
5k
views
What kind of force is it when you push a door shut? [duplicate]
Possible Duplicate:
How can I stand on the ground? EM or/and Pauli?
It probably seems like a silly question to a physicist, but I'm from a pure maths background and don't know an awful lot about ...