Recent content by Jstuff

Hello, I am trying to understand how light would interact with a shockwave, but for that I need to make sure my understanding of the physics of light is correct. It is my understanding that light travels independent of a medium because of the electromagnetic waves it produces. A wave, such...

Homework Statement Hello, I have an exam later in the week and I'm trying to understand how to this problem. Homework Equations Sum of forces. Sum of moments. The Attempt at a Solution I broke the mechanism into 3 pieces, the crank, connecting rod, and slider and then began to analyze...

Well the direction of propagation to my understanding is to the right in the +X direction. However, the answer is that it propagates in the +Y direction from the top wire which I do not understand.

Okay, so then I am crossing (450i) x (.O4i-.07j)1/.08. Correct?

I've done this. From this and using the right hand rule the magnetic field would point along the x axis. How does the fact that it is very far away on the axis change the direction of the magnetic field?

A point charge Q moves on the x-axis in the positive direction with a speed of 450 m/s. A point P is on the y-axis at y = +70 mm. The magnetic field produced at point P, as the charge moves through the origin, is equal to -0.8 μT k^. When the charge is at x = +40 mm, what is the magnitude of the...

You have two wires an equal distance above and below the x-axis the top wire comes out of the page and the bottom wire goes into the page. Finally, consider point X (not shown in the diagram) located on the x axis very far away in the positive x direction. Which of the vectors best represents...

Aww okay in your previous post you wrote page 26 when you meant to write 24. Thanks for all your help Chet!

Chet, the table on page 26. At 100F none of the volumes are at .76ft^3/lb which is the new specific volume once half the mass is gone.

Sorry for all the questions Chett, but at 100F the volume is different. I don't see any other place where it says 100F. Can you further explain how to find the answer using the table. Thanks

Hey Chett, so I found the quality by using a formula I found in the book. V1=Vf+x(Vgf) where x is the formula. And now I am working on the second part of the problem. So since the mass is half the specific volume will double since v=V/m. Using that I an now using the ideal gas law, Pv=RT, and I...

Chet I found on the table where it states the temperature, 90.5F, at the specified Pressure and volume. I am confused though because in the problem it says it is a compressed liquid however the tables are for a vapor. Why then do I look in the vapor table? Thanks

Homework Statement R134a rests in a compressed fluid can at 120psia, and a specific volume of 0.38ft3/lbm. What is its temperature and quality? Half of the mass is now vented off to the atmosphere. The can is allowed to exchange heat with the surroundings at 100°F until they are in thermal...

Thanks, but why exactly? Also, does anyone have any other ideas?

Homework Statement I have to submit a photo for a physics contest. I was thinking of using the picture in the attached, but I'm having trouble trying to figure out how to explain it in terms of physics. The background on the picture is: We had a very wet snow and as the snow built up on top...