# Recent content by rambo5330

1. ### Fluid Dynamics: Bernoulli's?

ya sorry ..I phrased it poorly. I This question is part A. I can calculate a velocity 10.2 m/s which does appear on the list yes. However when I move to part B it wans to know what the velocity V3 of the lower section is. I use conservation of mass to determine this and i get an answer of...
2. ### Fluid Dynamics: Bernoulli's?

attached is the problem. I use bernoulli's equation along a "streamline" from the inlet at point 1 to outlet at point 2. I do this to obtain the velocity V2. After working through it (simple algebra) I end up with 10.20 m/s ...seems right to me... however upon doing a conservation of mass...
3. ### Laplace transform

ahh thanks.. we actually learned convolution theorem last week...but I was unsure of where to apply it.. I've been trying the convolution method for the last hour and apparently I'm not applying it correctly. and in my table there are general laplace transforms yes but not any for something...
4. ### Laplace transform

Hello I'm struggling to understand some basics here with the laplace transform.. I'm given the laplace transform of 2/(s + 4)^4 and I need to take the inverse of this to get back to y(t) Looking at my tables the only transform similar to this is 1/(s + a)^2 I understand I can pull...
5. ### Electrical Circuit - Power dissipation

actually that is exactly what your talking about... i just drew it out with the source and a resistor in series and did KVL and yes i totally understand now... but basically this is not giving true power dissipated by the circuit is it not... its now including power dissipated by the power...
6. ### Electrical Circuit - Power dissipation

im not 100% sure what you mean by that but im assuming you mean... an ideal DC power source has 0 losses and a non-ideal power source does have losses?
7. ### Electrical Circuit - Power dissipation

During a Lab we had a simple purely resistive circuit hooked up to a 10 VDC power supply with an adjustable voltage output. In order to determine the power dissipated by the circuit we were asked to determine the source voltage while the circuit was DISCONNECTED... we were not told why... In the...
8. ### Shifting Coordinates question

that makes a lot more sense maybe the graphic that goes along with the question was throwing me off... it shows a stadnard x,y and then the p-q axes rotated and shifted. we are taught to do this with a rotation matrix etc.. the way you explained it makes perfect sense though if i think...
9. ### Shifting Coordinates question

I have to revisit this thread. I'm still having a difficult time conceptually/graphically understanding this. So we're dealing with a graph of velocity. Which would be distance vs time graph correct? or do you interpret this as a velocity versus time graph? im having a really hard time...
10. ### Shifting Coordinates question

Interesting, thank you very much. I will think about that one for awhile !
11. ### Shifting Coordinates question

the more i think about it the more it bothers me... Moving the origin of a coordinate system without moving the point is exactly the same as moving the point,while keeping the origin fixed. which is exactly the same as creating a new vector with a different magnitude and direction?
12. ### Shifting Coordinates question

Well that is indeed how I arrived at the answer the first time, is by making a transformation matrix and not shifting the co-ordinates origin. however this is whats really confusing me, I thought for sure (especially with a velocity vector) it would make a big difference where the coordinate...
13. ### Shifting Coordinates question

I'm stuck on this question.. I have achieved the answer by fluke but would love help understanding the process its driving me nuts... The velocity of a ball in an x-y coordinate system is (10, -5) where distance is measured in metres. A second coordinate system, p-q, uses units of feet (1 ft...
14. ### Gauss's Law and electric flux

Oh excellent, so judging by what you wrote to continue past where I left off it involves a double integral? if this is the case I have not learned the double integral yet this semester which makes more sense why I as so stuck ..
15. ### Gauss's Law and electric flux

Can someone please help me work through this problem I've spent over an hour on this trying to figure out what to do.. heres the question A nonuniform electric field is given by the expression E = ay^i + bz^j + cx^k, where a, b, and c are constants. Determine the electric flux through a...