Homework Statement
The graph shows the potential energy of an electric dipole which is in a constant electric field; only the electric force is acting on the dipole. Consider a dipole that oscillates between plus and minus 65 degrees.
a) What is the dipole's mechanical energy?
b) What...
Sorry! I'm totally new to this and didn't get what you meant in the first place (about the θ, etc.)
Why isn't it λ_0 ? Wouldn't it be sin^2 then?
I think I get what you mean about the components, give me a second.
EDIT:
I got it! Thanks so much for your help!
So, dq = \lambda d \theta? Then I plug that into Coulomb's Law to solve for dE, but how do I solve for the components?
To be more specific, what I get is:
dE=k\lambda d \theta /R^{2}
Which is the same as
dE=k\lambda_{0} sin(\theta) d \theta /R^{2}
Do I use a sector for the...
Homework Statement
A thin glass rod is a semicircle of radius R, see the figure. A charge is nonuniformly distributed along the rod with a linear charge density given by \lambda=\lambda_{0} + sin(\theta), where \lambda_{0} is a positive constant. Point P is at the center of the semicircle...