Recent content by edlin

I did see that equation though, but I'm not sure how I would get the velocity. And does it matter that r is outside the circle??

The Force on an Electron...?? Again, hi! I am very thankful for the help that I am being provided. I am yet again stuck in a problem. I really do not understand it. For the situation described in Figure P31.32, the magnetic field changes with time according to the expression B = (5.00t3...

I just divided the 3.24 by 2, which gave me the answer. The reason why I did not get it, I think, is because the book does not present it correctly. The Smax equation in the picture above is actually given as Sav in my book, so that's why the answer was not correct. Thank you so much!

Actually...the equations that are given in the book are very general, and none of them involve integrals. I have used the third equatin below Poynting vector. And I also used Saverage/c=uaverage...but it's still wrong.

Energy Carried by Electromagnetic Waves- why is it wrong? Hi! I have this homework problem that I just don't understand why it's wrong. A monochromatic light source emits 110 W of electromagnetic power uniformly in all directions. (a) Calculate the average...

Well, I actually did get answers in the hundreds, but when I put my answer in, it tells me it has the wrong magnitude. And since they provide me with the units, it says mHz...so the answer is multiplied by 1/10^3... and I really don't understand why. I get no answer near that.

Hi..I am new here and I am really thankful for any help that I may get :blushing: I am stuck in a problem of mutual inductance. It seems fairly simple, yet I cannot get the correct answer. Two coils are close to each other. The first coil carries a time-varying current given by I(t) =...