# Search results

1. ### Basic Maxwell Speed Distribution Function

Homework Statement Homework Equations The Attempt at a Solution I DO NOT NEED HELP WRITING THE PROGRAM! I'm just trying to figure out the basics behind it. Since this is an integral I will be solving this problem by using riemann sums. Where I'm having the most trouble is in the...
2. ### Derive the energy equation for a van der Waal gas.

Homework Statement Derive the energy equation for a van der Waal gas when T and v are the independent variables. Homework Equations I'm required to start from: du=\frac{\partial u}{\partial T} dT +\frac{\partial u}{\partial v} dv The Attempt at a Solution We'll when I first...
3. ### Show that the Change in Volume is Independent of the Path

Ok thanks I'm going to take another look at what I did. Will post when I finish.
4. ### Show that the Change in Volume is Independent of the Path

Here is the work I have done so far. I did use the equations but I was having a hard time understanding in my mind the final values to plug in specifically for the final T value. I assumed it was referring to the final state so I plugged in 400 K. Please let me know if I made any mistakes...
5. ### Show that the Change in Volume is Independent of the Path

So would I have to change the equation of state around and plug it into each change of V, change of T, and change of P? Edit: I should plug them into the partial difference equation? The change in should be constants I think. Edit(again): The only equation I really have to plug in is V=(RT)/P...
6. ### Show that the Change in Volume is Independent of the Path

The equation of state would be PV=nRT. P- pressure V- volume n- number of moles T-temperature R-universal constant
7. ### Show that the Change in Volume is Independent of the Path

Homework Statement Homework Equations The Attempt at a Solution I understand what the question is asking. Both ways I should get the same answer. I'm having trouble figuring out the mathematics behind this question.
8. ### Fortran Fortran Help (Do Loop)

Hey guys, I'm new to fortran and I'm having a slight problem. I put my code below as reference. I first set up a my known values. Then I used an equation to solve for v. After I solve for v I then computed c which involves v. What I'm now trying to do is to loop the value I got for c back...
9. ### Two-conductor transmission line, find the potential difference V of th

Hey guys. I attached my work to this problem before but it didn't go through so here it is. It's ATTACHED. I also included so information from the textbook. if anyone has any ideas please let me know. Also I even asked my teacher and he said the answer I should be getting is the one that is...
10. ### Two-conductor transmission line, find the potential difference V of th

Two-conductor transmission line, find the potential difference V of the two conductors.? Two-conductor transmission line. At point P (x=43 cm, y=32 cm) in Fig. 2-10, |E|=450 V/m. If s=25 cm, h=29 cm, and r=12.5 cm, find the potential difference if these two conductors. Ans. =1.13 kV...

Ok I figured it out guys. Thanks to LCKurtz for explaining it to me. The function I had is correct -375r+300. Since it was a circle it was easier for me to put into circular coordinates. So I had to change from dxdy to r dr dΘ Whole set-up: ∫∫-375r+300 r dr dΘ from 0 to 0.8 then from 0...

Thanks guys. I will work on it later today and I will get back to you guys. Once again thanks

Sorry about that sir. I just edited the original post.

Homework Statement The problem is to calculate the flux emanating from the exhaust of a jet engine. The air gas velocity from a jet engine varies linearly from a maximum of 300 m/s at the center of the circular exhaust opening to zero at the edges. If the exhaust diameter is 1.6 m, find...
15. ### General Enginnering Problem Dealing with Voltage Supply

Ok Thanks guys. I'm going to try this in the lab room tomorrow and will reply with my results. Once again, Thanks.
16. ### General Enginnering Problem Dealing with Voltage Supply

Hello, So I'm facing some difficulties. I'm using a DC voltage supply and connecting it to a PIC Board. The AC adapter that comes with the board outputs 9V DC. To be safe I'm just using 5V from the DC voltage supply. When I connect it to the board the reading from the voltage supply drops to...
17. ### Which describes the interference at P? (Multiple Choice)

Homework Statement In Young’s double-slit interference experiment, if the rays that reach point P on the viewing screen have a path length difference of 2.50 wavelengths, which describes the interference at P? A. It is the central bright fringe. B. It is the first dark fringe to either...
18. ### When light reflects from a thin film back toward the source, what is the path length?

I'm leaning towards A now. Anyone have any ideas?
19. ### When light reflects from a thin film back toward the source, what is the path length?

Homework Statement When light reflects from a thin film back toward the source, what is the path length difference? The Attempt at a Solution A. It is equal to twice the thickness of the film. B. It is equal to the thickness of the film. C. It is equal to half the thickness of the...
20. ### Finding Laplace transform of a Differential Equation

Not sure if the work is correct but you have to inverse the Laplace transform at the to solve.
21. ### Finding Object Distance and Image Distance

Homework Statement More mirrors. Object O stands on the central axis of a spherical or plane mirror. For this situation (Table 34-4 below. All distances are in centimeters.) , find (a) the type of mirror (0 depicts "plane", 1 - "concave", 2 - "convex"), (b) the radius of curvature r (nonzero...
22. ### What self-induced emf appears in that coil?

Homework Statement The Attempt at a Solution I now know the units are nWb. I'm just getting a little confused by answer. ((6.1mH)(7.3mA))/224turnes=.198795) (mH*mA)/turnes So would that equal= 198.795 nWb?
23. ### Which describes the magnetic flux through a section of a loop?

Wow. Thanks gneill. I think I know the answer. Phi = B.A It has SI units of the weber (Wb) which is a tesla metre squared (Tm^2) and is a scalar Am I right?
24. ### Which describes the magnetic flux through a section of a loop?

Now I'm thinking that the answer is A.
25. ### When is the magnetic flux on a section of a closed surface equal to zero?

Oh. ok so flux = B.A.cos x , where x is the angle between magnetic field and area vector. since x= 90 degree cos x = 0 and hence flux = 0. The answer is C. I'm a right?
26. ### When is the magnetic flux on a section of a closed surface equal to zero?

Homework Statement When is the magnetic flux on a section of a closed surface equal to zero? A. When the magnetic field is in the direction opposite that of the section’s area vector. B. When the magnetic field is in the direction of the section’s area vector. C. When the magnetic field...
27. ### Which describes the magnetic flux through a section of a loop?

Homework Statement Which describes the magnetic flux through a section of a loop? A. It is a vector that is directed outward through the section. B. It is a vector that is directed inward through the section. C It is a vector that is tangent to the section. D. It is a scalar...
28. ### Magnetic Field involving solenoids

20mm = .02 30mm = .03 assuming that I can ignore n because it will be the same for both. Would it be E because the radii doesn't play a role in the equation?
29. ### Magnetic Field involving solenoids

The formula is B = μ_o*i*n n is the number of turns and yes
30. ### Converge or Diverges?

1. The limit of (1+ 1/n)^n as n goes towards infinity is e. Since the question asks (1+ 1/n)^2n the answer is e^2. Just take the limit of (1+ 1/n)^2n as n goes towards infinity. 2. the limit as arctan(n) goes to inifinity is infinity, thus arctan(n) diverges.