The main subject of it is about cable shielding in electromagnetic compatibility. I've googling myself but nothing much info about it.
I got some answers from german , after translate is something like this ( dotn know correct or not ):
1. reflection produces ripples
2. to against strong...
HI,
I got some questions regarding Electromagnetic Compatibility:
1. When we measure transfer impedance for cable shielding , why we have assume that lamda >> L ?
2. What is the difference between trasnfer impedance & admittance?
My friend told me that the impedance in purely...
hi,
I spray with my keyboard with Spray paint ( i think is enamel paint ) and now i am regret - so i need a solution to dissolve it but i can't remember the name , can anyone tell me ? thanks
energy is conserved ???
hi,
just read about energy conservation but i am not so clear about it .for example : a particle moves in uniform oscillation electric field - does the energy conserved ?
what is the criterion for conservation energy?
thanks
My thought : angular momentum of z component and the energy of the system is conserved ... Pls tell me if there are more quantities are conserved
thanks
hi,
if i have mass possess potential U(x)=-Gm1m2/(x^2+y^2+(kz)^2 )^1/2 , i said angular momentum of z is conserved but not angular momentum of x , y .. is it correct ?
what else is conserved ? energy ?
hi,
i read lots of book regarding fictitious force - coriolis and centrifugal forces, but i am not clear how to determine the direction of the force..
example. if we throw a ball vertical up , how we can know the deviation from the original position ( from book we know that if the ball...
ya, i dont know is right or wrong -
dv/dt= qBv/m -kx
but the spring's motion is in x y plane ( if z is magnetic field) - how can i decribe the force cause by spring ?
hi,
got a difficult question to ask :
we can easily find the motion of charge in magnetic field.But now if the charge is attached to a spring, how can we find the general motion ?
is it like a gyroscope ?
thanks
hi,
what is difference between Centripedal & Centrifugal ? One is in inertial frames and the other in rotating frames? one is 'true' force and the other is fictitious force?
thanks