Recent content by chrishans

No, that's all I have. Since I'm given a linear density for the ring which includes free and polarization charges, I assume it's a dielectric, but I don't know its coefficient. With that density which includes polarization charges, is it ok to calculate the electric field, like in the formula I...

Homework Statement There's a ring of radius R with linear uniform charge density \lambda=constant (which includes both free charges and polarization charges). The ring is in a dielectric region with \varepsilon_r. I have to find the electric field on any point of the axis of the ring Homework...

I tried further and now I seem to have found the EMF's induced by both the cylindrical region (because of its time-depending B) and the square one (because of the bar motion), not taking into account the other one. Assuming both results are right, how do I get the final solution, the 'total'...

Homework Statement A conducting bar of length L moves with velocity v, in a rectangular region with a uniform and stationary magnetic field B_1. Near the bar, there is a cylindrical region of radius R with another magnetic field B_2 (it may vary on time). Both magentic field are normal to the...

I'm used to problems which ask me to find the heat flux for when, for example I have a very long cylinder covered with an insulator, each with their respective conductivity coefficient. I'd use the formula \frac{\partial Q} {\partial t} =\int -k\vec{\nabla} T \vec {ds}. But now I have a...

Homework Statement A plane of mass 1930kg, driven by a pilot of mass 70kg moves at a constant speed of 200 metres/sec describing a vertical circular trajectory, so that in the top of the circle the pilot is 'upside down'. Find the minimun power of the engine so that they can move from the...