Recent content by Kalookakoo

Homework Statement http://tinyurl.com/cercnq3 Homework Equations V = IR The Attempt at a Solution I don't even know how to begin. Am I supposed to use superposition? I rad about it online but don't know how to apply it.

Homework Statement http://ft.trillian.im/b0f9eae6eee2cb82091d0bd460ed09948b0cf819/6bh6EcByYLCp8YJWVJ5pqqnrqKcIY.jpg Homework Equations Fx= Fcos(theta) Fy=Fsin(theta) The Attempt at a Solution Starting with number one, I can't understand how to find the force given by that...

First off let me just say you've been a big help, and thank you for taking time out to help me understand this stuff. Just going to throw this out. Q = (TL)/R It makes sense in my head but it's just a guess. oooooh. Didn't look down there. V = 0 @ r=b Change in V = V - where v = 0 ? so... V =...

Gotcha on the first part. thanks I don't quite understand. So Q = TL can only be used for between the cylinders? So when r<a, otherwise known as within the inner cylinder, it must depend on r? So I replace L with r? Maybe I have the wrong understanding of what exactly represents..ughhh. I...

Is ΔV = ∫E*dr correct? Wikipedia has it with a negative, but I can't seem to understand why. I realize now everything with E is constant except for r. V = T/(2∏E0) * ∫(1/r)dr V = T/(2∏E0) * ln(r)*r So V = [Tr/(2∏E0)]*ln(r) b) a < r < b This is between the two cylinders. I'm...

Well, I feel like I have all the information and formula in my head somewhere. Just need some guidance sorting it all out. Haha So, upon further review, I see that the line integral should be negative. I can't conceptually understand why though. The field is going from the inner cylinder (+) to...

Ok So... ∫E*da = q/E0 EA = q/AE0 E = q/(2∏rLE)0 Q enclosed isn't given so I assume I get that from the charge per unit length. (charge per unit length = q/L) I will use T as charge per unit length. Q = T*L So: E = T/(2∏rE0)Hopefully I'm not doing unnecessary work...from here... ΔV = ∫E*dl V =...

Homework Statement http://ft.trillian.im/b0f9eae6eee2cb82091d0bd460ed09948b0cf819/6b66r5cGJrRSOCQPbItbRmtMARJhR.jpg Homework Equations http://ft.trillian.im/b0f9eae6eee2cb82091d0bd460ed09948b0cf819/6b674JdPpi29mGe8SqWkcnh8K6bmA.jpg The Attempt at a Solution I know how it works...

Homework Statement 2 Questions. 1)Find an equation for the surface consisting of all points P for which the distance from P to the x-axis is 5 times the distance from P to the yz-plane. 2)Find an equation for the surface consisting of all points that are equidistant from the point (−3...

Bump?

And I got the wrong answer. My moments from that point using the two methods are not equal. I found the moment using x and y components timers perpendicular distance is equal to 52000. Using the second method, I found it to be 63879. I feel like I did the first method fine. For the second...

Ahh I see now. I have a bad habit of not drawing diagrams or not doing them well enough to scale. Thanks for the help.

I have it drawn out but I'm stuck though it seems obvious... I mean, it's just those 2 vectors with that theta in between. But you can't find the other magnitude with just one angle and one vector... Or do the two connect at their tips to form a right angle of some sort?

Here's the diagram. http://i.imgur.com/4yGeT.png

Homework Statement By finding angles, determine the component of the force acting at C which is perpendicular to the line CP. Show that the resulting moment agrees with the calculation in part (ii), if you were to look at that force alone. Force at C = 200Ni + 250Nj (calculated to be at an...