Recent content by freezer

Does this look reasonable: \frac{Q}{4\pi \varepsilon_0(R^2 + Z^2)^{3/2} }(Z\hat{z}-R\hat{r})

So I would have to do it twice. dE = dEr + dEz

Homework Statement This is not a homework problem so there is no problem statement. More of a conceptual question. Consider a charge on a ring: If this was a semicircle opposed to a ring, how would this change the equation since there is not an opposing dEr force...

I am not seeing it. For cylindrical I am only seeing the 1/r on the phihat term

Homework Statement Determine the charge density due to the following electric flux density: \overrightarrow{D} = \hat{r}4rsin(\phi ) + \hat{\phi}2rcos(\phi)+\hat{z}2z^{2}Homework Equations \rho _{v} = \triangledown \cdot \vec{D} \rho _{v} = \frac{\partial }{\partial r} + \frac{\partial...

Pythagorean, Thanks for your reply. I to googled the key word but was more overwhelmed with the information and was having trouble applying it to this particular problem. I was looking at this source: "www.ams.sunysb.edu/~jsbm/courses/311/cheby.pdf" I was thinking it would be one sided...

Ray, I understand that some tutors get a rush when they get the opportunity to denigrate a student and pump-up their own ego through condescending remarks that serve little purpose. Hopefully, I have given you the opportunity to get that off your chest. Now that we are past that, I am not...

Homework Statement The random variable X has an unknown distribution with μ = 10 and σ^2 = 1.2. use Chebyshev's inequity to solve the following. a) Find an upper bound on the probability that X deviates from its mean by at least 2 b) Find an upper bound on the probability that X deviates...

Oh yea... sorry. So my code is not working. The poly solver is not generating numbers that i can us in 'r'.

Homework Statement Generate 100 data points from a continuous uniform distribution with mean = 10 and variance = 4 Homework Equations u = (a+b)/2 var = (b-a)^2 / 12 r = a + (b-a).*rand(100,1); The Attempt at a Solution points = 100 m1 = 10 v1 = 4 syms a b [a...

So i can get VL = 35+j25(V) Vl = V0+(1+gamma) 35+j25/(1.8) V0+ = 19.44+j13.89(v) Vin = V0+(exp(-j0.6pi) + 0.8exp(j0.6pi)) Vin = 18.89+j13.70 Iin = Vo+/Zo(exp(-j0.6pi) - 0.8exp(j0.6pi) Iin = -1.12-j33.29 Iin* = -1.12+j33.29Pav = 0.5*Re(VI*) 1/2*Re(VinIin*) then i get -242W (this does not seem...

Homework Statement A lossless transmission line has a characteristic impedance Z0 = 300 ohms, is 5.3 wavelength long, and is terminated in a load impedance ZL = 35 + j 25 (ohms). Find the following using Smith chart. a) The input impedance on the line b) The standing wave ration on the...

Laplace is not for a few more chapters...

So my results for Vr and Vl seem reasonable but Vc seems like it should be 0.03sin(50t) so i am not sure i am using the right formula.

Homework Statement i(t) = 0 for t<0 and 5*cos(50t) for t>=0 Vc(0) = 0 Circuit is current source, 5 ohm resister, 2 Henry inductor, and 3 Farad capacitor in series. Need to find Vr(t), Vl(t), and Vc(t), voltage across resistor, inductor, and capacitor. Homework Equations V= IR...