Recent content by drkidd22

Hello, I'm working with a heat exchanger I'm trying to integrate into a cooling application. I've done some tests but want to have some clear understating of how the calculations are done or if I have missed something. Below is what I have so far. So it's a radiation with 2 pwm fans, they push...

Homework Statement x(t) = e(-2t) * u(t) Ex = x2(t) dt Attached is the work I have done. Got stuck towards the end.

Homework Statement Sketch the signal: x(t) = 2^(-t*u(t)) over (-1 < t < 1) The Attempt at a Solution Attached is an excel fine with my work out. I want to know is it is correct.

There are three forces at A Fx Fz Fy

distance on horizontal=√(18^2+18^2)=18*√2 ft distance on vertical=21 ft ∴θ=angle in between pole & cable=tan-1(18*√2/21)=50.479 degree Σall horizontal force=0 1680=2T sinθ ∴T=1088.944 lb Σall vertical force =0...

So I have this so far trying to find Tbd. It will be the same for Tbe as they are the same distance away from A.

I mean 30 Ohms, the O makes it look like a 300

I need help trying to figure this problem out.

Ok I drank some cheap wine and my light bulb went off. I feel stupid now, but I got it figured out. Ma = 0 (-100Nx300mm)+Cy(150mm)-(173.21Nx400mm) = Cy = 661.89N Mc = 0 (Ay150mm) - (100Nx300mm)-(173.21Nx250mm) Ay = 488.7N Thanks to all for your help

I'm really frustrated with this and I give up, If someone explains this to me I will unlock whatever it is that's blocking mi mind to get through it. Can someone please explain it to me.

I'm confused trying to find Cy and Ay. But this is what I tried doing.0 = Fay + FBy Fay -173.2 = 0 Fay = 173.2 Fay + Fby + Fcy = 0 Fcy = 0? or is it 250mm(-173.2N) = Fay(150mm) Fay = 288.66N (I think this is the right way)

So Cx + Bx = 0 Cx + 100 = 0 Cx = -100N?

300ma = 9/R Total Resistance = 30Ohms 30/2 = 15ohms each resistor?

Homework Statement See attached image file Homework Equations law sine law cosine The Attempt at a Solution Find the reactions about two points from the applied force at point B Bx = 200Cos60 = 100N By = 200Sin60 = 173.20N May = -173N(.4m) + CyN(.15m) = 0 May = -461.86Nm Max = -100N(.3)...

Yeah I noticed that. I should use 60 degrees instead I guess