Confused about several parts of this process. I will list them methodically.

>a
Please explain to me how to get H. I know B = mu*n*I for what is presumably a solenoid, so H is n*i, but the answer on paper doesn't make much sense to me when I go through part A (I end up with a negative M value).

>b
How do I acquire Kb? From what I recall it requires multiplying M by a normal quantity-- how do you determine this normal?

>c
For this, I am just confused on how to determine the integration bounds. Really drawing a blank here (just sick of trying to work through the problem for so long).

Yes, I know I made posts about this elsewhere, but I want to learn, no?