Response Definition and 486 Threads

Find the response of the of the linear system at rest y' + y = x , where x = sin(t) using the Fourier transform and formulas : Y(jw)=H(jw)X(jw) y(t)=h(t)*x(t) convolution

I am trying to find the frequency response for the given circuit. My instructor recomended using a nodal analysis method. However, while attempting to use the nodal analysis I end up with all my variables equaling zero (Va = 0, Vin = 0 and Vout = 0). Is there something I'm missing or over...

statistics and probability

Hello everyone, I have yet another problem that I just can't seem to work my way around. Here it is: A particle starts from rest and at the origin. The particle is cofined to motion along a straight line. The particle accelerates uniformly with magnitude a for a time interval t, then...

Impulse Matching In regards to finding the unit impulse response of a system. We assume that x(t) = \delta (t) and that the intials conditions at t=0^_ are all zero. The impulse response h(t) therefore must consists of the systems's modes for when t \geq 0^+. But why is it that h(t) = A...

Well I was on my way to the state written EMT-B exam, sitting on the bus station when at around 6:35 pm EST I spot a black Honda going from the left, and a white van coming from adjacent road. My brain was punching all the numbers and estimated an imminent collision, which took place in about 3...

can someone show me how to find the impulse response h(t)? questions: Determine the impulse response h(t) for the system characterized by the differential equation y(2)(t) + 2 y(1)(t) + 17 y(t) = x(2)(t) + 5 x(1)(t) + 18 x(t) thanks

http://www.theage.com.au/news/national/kosky-rules-intelligent-design-a-faith/2005/10/28/1130400365346.html October 29, 2005 ---quote--- Kosky rules intelligent design a faith Victoria's government schools will treat intelligent design as a religious faith, not science, Education Minister...

Can you help me find frequency response for the system. Thanks h(n) = (a)^n*cos(n*pi)*u(n)

The question is as follows: The step response of a linear time-invariant system is given as s(t)=t*e^(-2t) u(t) Determine the response of the system to the following inputs: a. x(t)=sin(3t) u(t) b. x(t)=tri(t-1) As of now I see this problem and I have no idea what it means...I tried...

I just read that Iran is resuming their uranium conversion. http://www.cnn.com/2005/WORLD/meast/08/08/iran.nuclear/index.html Since this is not uranium enrichment, it's no big deal, right? Do you suppose United States and/or other countries go crying to the UN?

Hi I need to "plot the output response of the system shown to the input stimulus given" I suppose it would help if i knew where to start, but I'll try and explain as best I can. There are two drawings. Drawing 1 - shows a rectangle with 1 / 1 +0.5s inside and a line drawn...

Iam doing very very poorly in English, while all my other courses math, chemistry, biology etc. are like 90%'s. I don't know what to do, I asked help from lots of people with this, and I still can't get do this well enough. I don't even know how I past the grad 10 literacy test. Heres my...

when solving a RL or RC circuit, what's the easiest way to tell if it is a natural response problem or step response?

If we give someone with blood group A a transfusion using an O doner we say they are safe, since the O blood cells will not possesses antigens to stimulate an immune response in the recipient. But surely the O doner blood with contain anti-A antibodies and memory cells that will be stimulated...

Why is the secondary immune response so much faster and so much greater than the primary immune response to a pathogen? Thanks in advance. :smile:

Perhaps motion is not what is happening in the electron clouds, at least not the motion we sense from the coordinates at which we observe the universe. Remember that you and I are particulate beings, made of what we observe to be atoms and particles...as you say? Also remember that each...

http://www.collegeboard.com/prod_downloads/ap/students/statistics/statistics_frq_02.pdf #3, please

Hi everyone. I need some help with these 3 problems. Any help would be appreciated. 4. Let f be the function defined by f(x)= ln(2+ sin x) for pi <= x <= 2pi (a) Find the absolute maximum value and the absolute minimum value of f. Show your analysis that leads to your conclusion...

i just received today my acceptance from the university of Virginia Tech in virginia, USA. I have until the first of may to send back the form to get the ultimate confirmation and to finalyze my application On the other hand, I'm waiting for the response of McGill university (Montreal, Quebec...

Hi, I have a question pertianing to the effect of capacitance of BJT amplifier circuits on the low and high frequency response of the amplifier. Why is it that the coupling and the decoupling capacitors, in effect, only affects the low frequency response of the amplifier, and why is it...

From the thread: https://www.physicsforums.com/showthread.php?t=61472 Well Dayle, I emailed Scott Stevens http://www.kpvi.com/index.cfm?page=team/scot/content.cfm and asked about the claims at your linked site. Here is his response. I didn't think that it would take long to nip this in the...

To those who habitually use this forum: What are the best methods to get a response to a question? I really love the idea behind these forums, but I never seem to evoke reactions with my threads. Is it all in the title, or is it how I post my question? I guess mine was just one of many wave...

Hello, I am attempting to determine a two point collision response for a rigid body. One point collision I can calculate, but I can't seem to extend it to two points. So, I thought, maybe I could get some insight here. :) Set up (It'd be great to have the ability to draw this one...

hello, in lieu of the upcoming ap exam, I have been studying old free response questions from ap exams. I have a question about this one A crash test car of mass 1000kg moving at constant speed of 12m/s collides completely inelastically with an object of mass M at time t=0. the object was...

hey, i did my undergrad in music and english and now am lost beyond reckoning with the impulse response stuff in my postgrad. Could anyone help with these exercises? They're examples from my lecture notes and have no idea how my lecturer got the answers. Please help? Ex.1) Show that x(t)*h(t)...

hey, i did my undergrad in music and english and now am lost beyond reckoning with the impulse response stuff in my postgrad. Could anyone help with these exercises? They're examples from my lecture notes and have no idea how my lecturer got the answers. Please help? Ex.1) Show that x(t)*h(t)...

hey, i did my undergrad in music and english and now am lost beyond reckoning with the impulse response stuff in my postgrad. Could anyone help with these exercises? They're examples from my lecture notes and have no idea how my lecturer got the answers. Please help? Ex.1) Show that...

You know, Adam posted a video that showed Americans shooting a wounded iraqi next to his gun while cheering... Well I saw it again on CNN late last night but I got quite a different interpretation. The feature was about how many young soldiers have to live with killing, and how it affects them...

What is the difference exactly? Thanks!

19) An Olympic skier moving at 20m/s down a 30degree slope encounters a region of wet snow, of coefficient of friction, .74 a. How far down the slope does he go before stopping? I know the answer is 144m, but how do I get there? b. How much mechanical energy is lost in this process...

I am getting a hold on immunological responses at the moment, but I am not familiar yet with the difference between T helper 1 and T helper 2 (Th1, Th2) immune response. I know that: Th1 cells produce IL-2 and IFN-gamma, which activate CD8+ T cells, NK cells, and macrophages; whereas Th2...

[SOLVED] an AP chem free response (please help!) i have a final tomorrow (yea i was procrasinating) and i have to figure out how to do these practice problems! please help you can! i need to know how to do it ASAP! NH3(aq) + H20(l) <---> NH4+(aq) + OH-(aq) In aqueous solution, ammonia...

why do our body don't feel the EM waves.

[SOLVED] Response to Mentat: what I believe to be a &quot;paradox&quot; By paradox I mean as the paradoxes associated with quantum mechanics. Whatever drives the nature of things, the physical laws has to be an "ultimate" force. That is it cannot fail. Nothing "owns" this force and it can...

Hello users, I'm working on a game at the moment which needs some physics. I try to simulate two objects at the moment that are colliding in the air. I know the mass of both objects, the mass center point, the collision point, their current rotation and their current speed etc, all I need ( I...