All Questions
13
questions
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102
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A question about Coulomb's law for one moving and one stationary charge
let one charge is moving and another charge is stationary (compulsory). Then the electric force between them can be calculated by coulomb's law?
- 107
2
votes
1
answer
170
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Does the charge distribution of two uniformly charged conducting spheres change as we bring them near each other?
Assume that we have positively charged two solid conducting spheres of the same radius and material. It is evident that the surface charge is uniform on them to eliminate the internal electric field ...
- 2,503
0
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0
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56
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Poincaré inverse square law unification
A while back, I came across a claim that was something like this: Poincaré said that no two fundamental force laws could have the same mathematical form such as $1/R^2$; that no two fundamental force ...
- 1
-3
votes
3
answers
113
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How can the unit of Newtons measure both gravity and electromagnetism?
For context, I was thinking about forces. Force is the mass of the particle multiplied by the acceleration it undergoes. There are different kinds of forces, for example, gravity and electromagnetism. ...
- 161
2
votes
1
answer
151
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On the infinite range of the electromagnetic force
I am curious as to whether there is a fundamental reason why weak and strong nuclear forces have such a short range whereas gravity and the electromagnetic force seem to have infinite range.
Since ...
- 1,640
0
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1
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34
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Sphere analogy of non-contact force formulas like electrostatic force should again produce infinite Force when 1 charge of 2 spheres gets closer
Everybody is giving the sphere explaination but 2 touching parts of a sphere, I mean the touching charges in the smallest parts of these spheres that has the smallest charge on it again create ...
0
votes
3
answers
364
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Can Lorentz force law be derived from Coulomb's law and Special Relativity? [duplicate]
If two stationary charges experience 1N of force, two moving charges should experience 1N of force as well right? (Due to the fact the the moving charges see each other as stationary.)
So can we use ...
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3
votes
2
answers
4k
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Why do positive charges attract negative charges?
From school and/or university we know that there is Coulomb's law that allows us to calculate the amount of force between two electrically charged particles.
However, I have never found any ...
- 133
2
votes
1
answer
2k
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Zero force for three charges in a triangle [closed]
Following is a problem from the book, Electricity and Magnetism by Purcell and Morin 3e.
Two positive ions and one negative ion are fixed at the vertices of an
equilateral triangle. Where can a ...
- 179
1
vote
1
answer
387
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Electrostatic force and their affect on 3D objects
So I am new to this science forum so please have mercy. I just have some basic questions about electrostatic forces. I hope these are not too vague. So basically from my understanding, if you have two ...
- 27
4
votes
1
answer
3k
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Gravity force strength in 1D, 2D, 3D and higher spatial dimensions
Let's say that we want to measure the gravity force in 1D, 2D, 3D and higher spatial dimensions.
Will we get the same force strength in the first 3 dimensions and then it will go up? How about if ...
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16
votes
4
answers
18k
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Are the Maxwell's equations enough to derive the law of Coulomb?
Are the 8 Maxwell's equations enough to derive the formula for the electromagnetic field created by a stationary point charge, which is the same as the law of Coulomb
$$ F~=~k_e \frac{q_1q_2}{r^2}~? ...
- 727
3
votes
2
answers
9k
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Why exactly does current carrying two current wires attract/repel?
When to parallel wires carrying currents in same direction $I_1$ & $I_2$.
The MIT Physics Demo Forces on a Current-Carrying Wire this video demonstrates that effect.
My question is, why exactly ...
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