Recent content by Natalie89

Hi Everyone, I have a question about logarithmic sampling. I think I might have to go and review my Z-transforms, but maybe not. The reason I am doing this is because I am automating equipment which records the data over time, but I want the sampling to be done logarithmically. If I have an...

Ah, well then thank you! It is after all an easy question. Thank you for working through the logic with me :)

I am assuming that we have to take into account the trajectories since my student is doing the quadratics unit in class right now. However, as my student tells me, this is the diagram her teacher gave her. My idea was to find the vertices of the two trajectories, and that would give us the...

My apologies. The green area is the area I am trying to find along with the height of the blue rectangle (building). I think my reasoning is not too far off that one of the diagonals of the area is the height of the building. I believe my equation for rocket 2, based on the perimeter of the...

Homework Statement A rocket is being launched along the line y=x from the base of a building, and another rocket is being launched from the top of the building parallel to the bottom rocket. Another rocket is being launched directly upwards away from the building. Find: The height of the...

Thank you!

Hello, I would like to find out (or calculate) what the work function of AlGaN is. I do not really understand how to calculate workfunction for compounds. I know that the work function of Al is 4.06-4.26eV and Ga is 4.32eV... I can't find N. Is it possible to do a calculation for a...

Hello, I am trying to calculate the lifetime mobility product μτ for a project. In order to do this I need to calculate the photogeneration. Therefore I need the light intensity and absorption coefficients. I understand how to calculate light intensity, and I have come up with an...

Thanks!

Hello, I do not understand very well how to sketch a root locus plot. I am able to find poles/zeros, where the root locus exist on the real axis, the break away/in points, intersection of asymptotes, crossing of the imaginary axis, etc., but I do not understand how to actually draw the root...

Hello Everyone, I have a question about LU factorization. I understand that LU factorization provides an upper and lower traingular matrices of matrix A. In matlab, a large matrix was generated, and we plotted the sparsity of A and then the sparsity of L+U and it was less sparse. My...

Thanks!

Thank you so much!

I have m(t)=0.2sin(w1*t) + 0.5cos(w2*t) ---> Note: the 1 and 2 besides "w" (omega) is not a coefficient, its a subscript to show that they are different. I found the Fourier transform to be M(F)=0.25[∂(f-f2)+∂(f+f2)] + 0.1j[∂(f+f1)-∂(f-f1)]. My question is, how do I sketch the magnitude...

What is the general Fourier Transform for a low *** filter if the lowpass filter also has a bandwidth of W Hz, and fc >>W,? I think it would this: ∂(fc) + ∂(f-fc) + ∂(f-fc)