Hey :)
I got as far that I know I have to use the total impedance, which I calculated.
Does anyone know, how I get the 2 resonant frequencies out of the total impedance? That'd be great!
Isra
I multiplied them out because if I want to find something out about the angle between them, the scalar product tells you. So basically I rewrote your task to:
Proof: (\vec A + \vec B)*(\vec A - \vec B) = 0 if |\vec A|=|\vec B|
That's how I read your question...
hey berkeman,
yes sorry, you're right... I was just waiting for someone to help me with the question I tried to figure out for hours without any luck, so I thought I could help answer some other questions meanwhile...
Can you by any chance answer the question about oscillating circuits I...
sorry, there's been linebreaks missing, so here again:
hey :)
to your first question:
( \vec A + \vec B ) \cdot (\vec A - \vec B) = (a_1+b_1)*(a_1-b_1) + (a_2+b_2)*(a_2-b_2) + (a_3+b_3)*(a_3-b_3)\\
= a_1^2-b_1^2 + a_2^2 - b_2^2 + a_3^2 - b_3^2\\
= a_1^2+a_2^2+a_3^2 -...
hey :)
to your first question:
( \vec A + \vec B ) \cdot (\vec A - \vec B) = (a_1+b_1)*(a_1-b_1) + (a_2+b_2)*(a_2-b_2) + (a_3+b_3)*(a_3-b_3)\\
= a_1^2-b_1^2 + a_2^2 - b_2^2 + a_3^2 - b_3^2\\
= a_1^2+a_2^2+a_3^2 - (b_1^2+b_2^2+b_3^2)
if perpendicular, this is supposed to be 0, so...
thank you so far :)
I know its a filter ... it's more a matter of language because I'm German and not that much used to writing about such topics in English. I hope you can help me anyway.
I'm familliar with TeX, I just didn't know how to use it in here...
The forces applying on the wagon are F=140 N (uphill), F_h (downhill), F_g (Gravity) and F_n (at right angle onto the uphill ground). Now you need to draw them and figure out F_h because F - F_h is the force that pulls up the wagon. You'll discover from your drawing the F_h = F_g*sin(18.5°) with...
solution
Hey :)
Both players are accelerating, so the equation for both their movement is
first player s_1 = 1/2*a_1*t^2
2nd player s_2 = 1/2*a_2*t^2
with a_1 = 0.5 m/s^2 and a_2 = 0.3 m/s^2
you know that s_1 + s_2 = 48m
Now you sum up both players' equations and recieve:
s_1 + s_2...
Dear readers :)
I've tried to figure this out for quite some time now, I hope anyone can help me on this:
I'm looking for the differential equations for 2 PARALLEL oscillating circuits coupled by a capacitor. I've tried to start similar as in http://www.ruhr.de/home/leser/mathe/355.pdf...