How Can I Solve My Nonlinear Homework Problem?

Thread starter abdooo89
Start date Jan 22, 2011
Tags

Nonlinear

Jan 22, 2011

abdooo89

[PLAIN]http://up.arab-x.com/Jan11/OGt43805.pngplese help me for my homework

plese :cry:

Last edited by a moderator: May 5, 2017

Physics news on Phys.org

Individual electrons trapped and controlled above 1 K, easing cooling limits for quantum computing
Quantum fluctuations found hidden beneath classical optical signals in polaritons
Superconductivity distorts crystal lattice of topological quantum materials

Jan 22, 2011

fzero

Science Advisor

Gold Member

You need to show some of your own work before we can try to help.

Jan 23, 2011

abdooo89

this is nonlinear control system pleas help

Jan 24, 2011

abdooo89

no one help

Thread 'Direction of the magnetic field of an oscillating charge'

Hello everyone, I’m considering a point charge q that oscillates harmonically about the origin along the z-axis, e.g. $$z_{q}(t)= A\sin(wt)$$ In a strongly simplified / quasi-instantaneous approximation I ignore retardation and take the electric field at the position ##r=(x,y,z)## simply to be the “Coulomb field at the charge’s instantaneous position”: $$E(r,t)=\frac{q}{4\pi\varepsilon_{0}}\frac{r-r_{q}(t)}{||r-r_{q}(t)||^{3}}$$ with $$r_{q}(t)=(0,0,z_{q}(t))$$ (I’m aware this isn’t...

View full post »

Thread 'Initial conditions for orbits around a wormhole'

Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...

View full post »