Recent content by Graham87

A current current loop is running through this figure. How do I design integration surfaces to find the magnetic dipole moment? In the solution the three following figures were designed for integration surface, and they prove that they all give the same answer of ## m= 2IRd \hat{z} ##. For...

Are you sure about this? I did like this: And since x=1 we get the following And eventually

Yeah, I realised that too! Thanks alot!

I tried that, but I get stuck in the manipulation on the most left sum to k=0? From your answer it turned to this somehow? Shouldn't the most left term be

Oh, I tried that too but did not go through it completely. So I get thefollowing: However the general solution formula does not seem obvious. Where might I have gone wrong?

I am attempting to solve this differential equation with power series I came with the following solution but I doubt it is correct. Since x=1 we get: I doubt its correctness because it looks messy. Also the convergence radian R goes to 0, giving only a solution for x=0 which is not...

Looks like some derivative or primitive function variation. But it's not in a series. I might consider checking if the field is conservative. But I'm curious how it would be done by the other way?

I'm not sure. It looks overwhelmingly complicated to me. Should I try to check if it is path independent?

Hello, How should I go about to solve this line integral along the line curve γ? I attempt to apply this relation but the substitutions get too messy. Thanks

I managed to calculate the fluence of the scattered photons. However, not the transferred photons. In the solution sheet the fluence rate has an l22 in the numerator in the end of the solution sheet. Where does that come from?

How do you know which binding energy shell to use? In the solution it uses K and L2. Why specifically L2 and not L3 or L1 for example? And what should I do with the information to omit electrons lower than 20kev? I initially thought that meant to omit the electron binding energies lower than...

Aha, that clears it. But how is that so? So this is because the radioactive decay is proportional to the number of daughter isotopes, which in turn is proportional to the neutron flux rate since the daughter captures neutrons from the parent? I think I got most of it now! Big thanks! Really...

Oh, ok. I don't get step 3 - calculate the decay of the daughter for t3. What do we need that for to find the flux if the flux is from the incoming neutrons in the parent? Thanks for the replies!

Regarding to calculate the fluence rate of the neutrons: how does the process of the neutrons in the reaction work? Are there neutrons decaying from the daughter particle? I cant see it. According to the reaction table the neutrons are coming from the parent particle 115(In) + n ? The daughter...

The problem comes with solutions. However, I dont get the 3 steps in the solutions. Why do they calculate decay for 120min in step 3? And why is only the daughter nuclide relevant and no granddaughter? There might be something lacking in my knowledge about nuclear reactions. Also, I don't know...