Recent content by tquiva

Homework Statement A plane electromagnetic wave propagating in free space has an amplitude (\sqrt{3}/2)a_{y}-(1/2)a_{z} V/m. Find the amplitude of the accompanying magnetic field assuiming the frequency of the electric field is 1 GHz. Homework Equations f_{E} = f_{H}...

Homework Statement I've been working on a python simulation program that is based on phase velocity and group velocity. It looks like the following screenshot, where three parameters (E02, f2, and v2) can be adjusted. These three parameters are adjusted in terms of E01, f1, and v1. I...

Thank you so much for this detailed response. I'm sorry but I'm still a bit lost. What is small positive spot z = z0? I'm still trying to figure out how to determine if the direction is +z or -z? How do I find this polarity? Also, I notice that you said sin(wt - kz). Does β = 100π or...

Homework Statement Hello all, could someone please assist me with the following problem? Homework Equations f = ω/2π λ = (2π)/βThe Attempt at a Solution I've already made an attempt to part (b), (c), & (d) of this problem. Below is my work. I'm having trouble with part (a). I drew the...

I'm going from the time domain to the frequency domain, so the exponential must be negative right? But still, I tried removing the negative sign... and the result remains the same. I get no answer, and the integral just stays as is. Any other ideas on what could be wrong? I'm using a Ti-89...

Homework Statement I am asked to find the Fourier transform of w(t)=1/(1+t^2) Homework Equations I know the only equations I need are: The Attempt at a Solution Therefore, I attempted the following: I tried to expand the function in the integral and got: I then...

Homework Statement I know that for air, the intrinsic impedance η is 377 Ω, but it becomes complex in a conductive medium. This fact is sort of hindering me in being able to answer a few problems consisting of electric and magnetic waves in a conductive medium, but I just wanted to clarify one...

I don’t see this equation in my book, but I tried it. I'm not sure where to go from here. Is my equation for E correct? Could someone please provide me with an example to get me going. My assignment is due very soon and any help is greatly greatly appreciated. Thank you!

Sorry about that. This should work now, Homework Statement I am given the following problem: Homework Equations 3. The Attempt at a Solution [/B] My known equations and attempt to the problem: Basically, my answer to the problem is not the same as the book's answer...

Homework Statement I am given the following problem: http://forum.allaboutcircuits.com/attachment.php?attachmentid=35938&d=1320027350 Homework Equations The Attempt at a Solution My known equations and attempt to the problem...

yes it does now. thank you very much

I finally came up with my value for x, which is x = d/2. However, part II of my problem asks for the same question except the mass at origin changes to 4M. I did the math, and it seems that it does not matter if both masses change, since the masses cancel out in the equation. So if I want a net...

Homework Statement Imagine two spherical planets fixed on the x-axis, one with mass M at the origin, and the other with identical mass M at the position x = +d. (Assume that d is much greater than the radius of either planet.) At what position along the x-axis between the two masses could you...

Homework Statement Consider the system of the Sun, Earth, and Moon, at a moment in time when they happen to be exactly in a line. (Assume that all distances d are measured between the centers of all bodies, and that all distances d are much greater than the radii of all bodies. M(sun) =...

thanks again, I appreciate it. one last question... I discovered that the percentage of initial mechanical energy dissipitated by friction is 89% the last question asked be for the average power, given that the total time down the slide is 30s. My choices are: A. 38 W D. 340 W B. 79. W...