Electricity and Magnetism Question

AI Thread Summary
Coaxial resistors and capacitors are discussed, with a request for approximate diagrams and relevant equations. Clarification is sought on calculating the self-energy of a charged sphere, with suggestions to consider both measurement and calculation methods. Reference is made to the Feynman Lectures for detailed calculations of energy in a charged sphere. Additionally, a recommendation is given to search online for specifications of coaxial components. The discussion emphasizes the importance of understanding both theoretical and practical aspects of electricity and magnetism.
Ave Kar
Messages
1
Reaction score
0
I have a couple of questions in E&M.

a)Can anyone tell me what a coaxial resistor and a coaxial capacitor looks like? (Approx Diagram) Because I am not sure which equations apply to them since I am not sure what they look like.
b)How do I find a self energy of a charged sphere? Split it into 2 parts and bring it together? Not sure on this one, if someone can help, thnx.
 
Physics news on Phys.org
b) Do you mean how do you measure (in the lab) the energy in a charged sphere?

Or do you mean how do you calculate the energy in a charged sphere?

There is a good discussion on calculating the energy of a charged sphere in Feynman Lectures Volume II chapter 8-1.

a) Just do a Google sreach for the coaxial caps and resistors. You can find the complete specs from most vendors.
 
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanged mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top