I should have reworded my response. I know you didnt say that, I was stating that you clearly know the impedance of an inductor is non-zero but at the same time the impedance is completely in the complex domain.
Remember, perfect caps and inductors have no resistance, their full impedance is the complex component. Your example with an inductor is a good case to look at. An inductor is just a cleverly shaped wire. Its actual resistance is low and for the purposes of basic Linear circuit analysis most...
Definitely not.
I haven't done AC circuits in 3 years so I'll leave the detailed responses to someone who is more likely to get it right. But hopefully this will help you get on the right track.
The voltage across a resistance is in phase with the current .
The voltage...
Sig and Systems isn't bad at all. Where I took it, it was 95% calculus so if you feel comfortable with calc it'll be a breeze.
EM seems to be brutal where I got my undergrad. Our nonlinear theory course was mind numbing but that's not my thing. I am sure someone else could run with it.
The notation in your original diagram is not correct. In Diagram #2 of your OP you are suggesting that Vin is shorted to ground. That is not how you specify that Vin's negative terminal is tied to ground. Notation for circuits is such that if you have Vin or Vin+ as the only references to Vin...
This problem was discussed in lecture and I think was a poor problem. The way I did it was how it was intended. But you are correct in the apparent loss of energy which was due to friction?!? Thats what the prof said... then he discussed how the microscopic model of friction where "peaks" slide...
Thank you for your reply. Here we are to consider the ball of chain as a point mass.
W = F *d (here) so W = 20(1.5) = 30 J
Im guessing that the Energy when enlongated is nearly all kinetic so
30 = 1/2 m v^2 = (.5)(5)(v^2)
v^2 = 12
v ~ 3.46 m/s
Which is the correct answer. Thanks for the help!
Homework Statement
Consider a chain of total mass M = 5kg that is coiled into a tight ball on a low friction floor(like an ideal ice rink). You pull on a link at one end with a constant horizontal force F=20 N, just until it reaches its full length L = 3 m. What is the final velocity of the...
yes that's it! thank you! It all makes sense, b/c all I could find is v^2 = G *(M/R) for orbiting bodies which is basically the same formula. Thanks again.
Im having difficulty with a physics problem and was looking for help.
The problem states: A spring has a relaxed length of 1.0m, when no force is acting to stretch or compress it. It has a spring constant k = 200N/m. A ball of mass .05kg is attached to one end and it is made to go in circle...