I worked on the problem a little bit more and I believe that I've worked out the correct solution. First when you write everything out it takes up a lot of paper and it is somewhat complicated. So the first thing is to go ahead and integrate the y and z components since they are the horizontal...
Homework Statement
Plane X=0 has a uniform charge density, \rhos while plane X=a has -\rhos. Determine the electric field intensity in region X<0.
Homework Equations
E=\frac{Q}{4\Pi\epsilon0R2}aR
The Attempt at a Solution
I already know the answer to this question. What I'm...
You took words out of my mouth. I can't believe I made such a small mistake. Well actually it was a rather large mistake. I just figured it out in my last period. You can't find a distance in cylindrical cordinates very efficently so you have to convert to cartesian. x = rho cos(phi) y = rho...
I think I've figured something out. I need R to be the distance from the point of observation to the charge. I'm making the mistake of trying to find the distance using polor which dosn't work. I need to convert to cartesien to find the distance.
Can someone look at my math and tell me if I did the integrations correctly? I'm still stumped on this problem. I've been looking over the steps and it all seems right to me except for the E-field in the rowe direction. I know that this should be zero. I'm wondering if the answer in the back...
Homework Statement
A disk is located at 0<r<1, z = 1. It has a uniform charge distribution of 200pC/m^2. A 30 \muC point charge is located at the origin. Determine the force acting on the point charge due to the electric dield produced by the disk.
Homework Equations
E =...
Homework Statement
I've actually uploaded the question.
When solving problems with magnetically coupled inductors I like to add dependent sources so that I can keep everything straight. My question is when I add the dependent sources does there need to be a specific polarity to them. With...
Ok, I have two question that have me stuck. I understand heavyside functions and how to do a laplace transform on them but, they've thrown me a curve ball. I'm sure I'm just making it more complicated then it needs to be.
Here is problem number one.
g(t) = 2t for 0 <= t < 1...
OH man so obvious. Your the man thank you so much. I havn't had a math class in over a year and now I'm taking diff eq. Bad idea you should definately keep them all together.
Homework Statement
\int\frac{4}{x(x+3)}
Homework Equations
The Attempt at a Solution
I can get to s certain point and I know I need to do substitution but, everytime I try a substitution it just creates a more difficult problem.
4\int(x^{-1}(x+3)^{-1})
I've tried...
Homework Statement
Find the steady state expresion for i(t) in the circuit if Vs=750 Cos(5000t) mV
All componets are in series
Resitor = 400 Ohms
Inductor = 40mH
Cap = .4 \muF
Homework Equations
Xc= 1/(j*w*C)
Xl = j*w*L
Xr = R
The Attempt at a Solution
Ok I know...
Ok, here is a goofy question. Say you have an inductor that is connected in a simple DC circuit and has been there for a "long time". Now if you had a switch that you could move at any speed that you wanted to and could be any distance from the terminal that you wanted it to be what would...
That makes sense. I tend to take to many steps in my math anyways. I find that it helps me to understand exactly what the equation means and then I can use it any way I want to. This section is the first time I have seen these equations so I am still in the mode of over using them.
Thank you very much that helped a ton. You don't need the mols because I have the following
p=1 atm
v= 154.752m^3
t=293
If I use the ideal gas formula I can solve for n which gives me the mols in the room. Then I use the equation
(5/2) nRT
I get the thermal energy.
thanks