Recent content by fatcat39

Homework Statement There are three horizontal areas side by side - a completely uniform area. Areas 1 and 3, the magnetic fields are going into the page and area 2's field is going out of the page. An electron enters area 2 (the middle region). What is its path? Homework Equations F =...

the problem says that the currents reach equilibrium. isn't that steady state?

But the formula is for V_C, the voltage across the capacitor. And there is a separate formula for charge - the Q(t) one. I tried solving both and got completely different answers (as in I solved the voltage one then did Q = CV). I don't think that works, esalihm.

So when finding currents, the branch that a capacitor is on (in terms of current) is 0, right? since when a capacitor is full, no current flows.

Homework Statement How does the loop rule apply to capacitors? I can't find any examples of circuits containing capacitors and resistors where the loop rule is used. I know the loop rule measures potential differences, but I'm not quite sure if that has anything to do with capacitors? All...

I don't think the part about the current through the resistor is important - it's different from the current and charge on the capacitor. I think. :)

Is this as far as it can be reduced? http://photos-c.ak.facebook.com/photos-ak-sf2p/v164/24/75/1238100168/n1238100168_30112286_5295.jpg Hmm...is this it? It seems like something simpler could be achieved somehow...*sigh*

oh, sorry - they were supposed to show up!

Homework Statement Reduce the circuit as much as possible. All resistors have R and all capacitors have same C. Homework Equations The Attempt at a Solution http://photos-a.ak.facebook.com/photos-ak-sctm/v183/24/75/1238100168/n1238100168_30112052_7338.jpg And this is my...

And is B zero? I guess someone else had the exact same problem, because I found a solution: http://handysolver.com/problemsandso...problem_id=418 that says that B is zero, but I really don't think so.

Work and Electrostatics - Help! Homework Statement I need to place equal and oppositve charges on a piano and at the top of a 5.0 meter ramp in order to move a 1000 kg box up a 30 degree frictionless ramp. The box has a charge of +Q and the top has a -Q. A) What magnitude charges do I...

Theta being 2/ sqrt(4.16), right? (LaTex doesn't work so well on my computer)

Ohhhhhhhhhhhhhh...okay. :) Thanks a lot! One more quick question: "A thin ring of the same radius has a uniformly distributed charge of + 1 microCoulombs. What is the E field 2.0 m away along the x axis?" N approaches infinity = number of points to form the ring E = (N/2) (kQ/R^2) cosine...

I guess I'm a little confused about where the triangle is, because the picture I have, z is vertical, x is horizontal, and y is halfway between them - so I thought that the triangle has legs of z for the base and 1.0 m as the height for P. But still, isn't theta (if you visualize the isoceles...

Isn't it between the z-axis and the line between P and a charge? I'm drawing that out of an example in my textbook, but the sample charges it showed were + 1 and - 1, not 2 positive charges. Would that make a difference?