Recent content by monnomestalex

So as always I overcomplicate stuff. It is easy to just calculate L = N hbar/2, where N is the number of spin, given the density of iron. L = I w, where I is the moment of inertia. Super simple. Ugh.

That's exactly it - thank you!

Homework Statement Iron atoms (atomic mass 56) contain two free electron spins that can align with an external magnetic field. An iron wire 3 cm long and 1 mm in diameter is suspended vertically and is free to rotate about its axis. A strong magnetic field parallel to the wire's axis is...

I'm still not sure why the fluid will rise once you apply the external voltage. For capacitors in series, \frac{1}{C_{eq}} = \frac{V_1+V_2}{Q} = \frac{1}{C1} + \frac{1}{C_2} . On one hand, assuming V(b) = 0 and V(a) = V, I get that V(r) = V \frac{r-b}{a-b} solves the Laplace equation, at...

Homework Statement Two long, hollow, and coaxial conducting cylinders, with radii a and b>a , are lowered into a tub of fluid with dielectric constant \kappa . A voltage V is applied between the two cylinders. The fluid is observed to rise up some height h into the volume between the...