How does phase shifting occur?
All i know is that when i you the regular equation
mx + cx + kx Damping bring phase shift (excuse my derivatives)
mx + kx No phase shift
Can someone explain this... :zzz:
i hope this will be the last one
Question 32)
For a 60Hz sinusoidal signal, the sampling rate (in samples per second) that would only record 4 ponts per cycle is :
(a) 15
(b) 30
(c) 120
(d) 240
i'm guessing 15 ... 60/4... yea.. i dont' get this question .. i think it goes with...
Question 25) High biot number (>>1) imply:
(a) Temperature gradients within sphere are great
(b) Temperature gradients inside sphere are small
(c) Reynolds number greater than 2300
(d) high friction factors
another one
Question 24)
When DC coupling is chosen on the Oscilliscope:
(a) input signal is grounded
(b) the input signal is directly connected directly to the amplifier and not altered in any way
(c) the input signal is connected to the amplifier through a low pass filter
(d) the...
Here's another one ...
Question 4)
(A): P = IV hold for any cuductor
(B) P = I^2* R holds only for conductors which happen to obey Ohm's Law
(a) only (A) is true
(b) only (B) is true
(c) both (A) and (B) is true
(d) both are false
Ohm's law and AC circuits/ Biots / Oscilliscope
hey wasssup...
i'm doing a practice final and need some help ...
It's askin which is true
(1) Ohm's Law is true for all materials;
(2) Resistance may depend on temperature
(3) REsistance may depend on current
(4) Ohm's law is...
To me a derivative and a partial derivatice is the same thing. You just take it with respect to another vairable ... move some things around and solve...
Can someone give me an example explainin what's happening... The difference between the two. I can solve it and i just absorb it , but...
hi dave... in an ideal world if all the ball were positioned perfectly and the impact was prefectly right on w/o super velocity (regular human velocity) then the balls could be caluclated no?
greg... there's so many varibles in here it would be hard.. you know actually if you can setup...
seems impossible for human but i could be wrong... if you're good at programing you can create an alogrithm to solve it..good luck with that...i hate algrithm... I think this problem is really hard... why not jus do one that get's the 8 ball in and call it a day... i don' think it's impossible...
eigen value can help with the mohr circle but it's really really long from what i jus reviewed... anyhow i have a book that explains ti and i dont' have a digital camera but this book is pretty good...
Mechanics of Material by Ferdinand P Beer
from the book it gives
sigY = 3.5
Sigx = 6...
i may be wrong but you'd probably need the the spring constant ... use conservation of energy ... also need to know how the load is being transferred due the rotation ... i know I'm wrong but i gave it a shot
Anyhow
books says
Subsonic diffuser is an expanding pipe.
In a picture it shows A -> B the radius of pipie decreases.
I was under the impression that subsonic and expanding pipe meant radius getting larger.
please clarify .. thanks again