# Recent content by velvetymoogle

1. ### What is an inverse meter?

Okay so if I have the 1/lambda = R (1/nf^2 - 1/ni^2) equation, how would I go about plugging it in? Is it any different than plugging in any other numbers?
2. ### What is an inverse meter?

Hi, I'm doing some astronomy work and one problem involves using Rydberg's constant. However, it is inverse meters and I'm confused. Does that mean that it is 1/109737361.6 m? Thanks.
3. ### Pv=nrt and PV diagram

Wait, I'm still confused. I've never done any of this before because my teacher doesn't teach and he sprung this on us within two days of the section. How would I figure out the work then for each part? How would I draw the diagram?
4. ### Pv=nrt and PV diagram

Homework Statement One mole of an ideal gas at an inital tempreature of 300K and pressure of 4 atm is carried through the following reversible cycle: a) It expands isothermally until its volume is doubled. b) It is compressed to its original volume at constant temperature. c) It is...
5. ### Mechanical Energy into Thermal

Homework Statement Students are designing an experiment to demonstrate the conversion of mechanical energy into thermal energy. They have designed the apparatus shown in the figure above. (To see the image, visit http://www.cs.utexas.edu/users/mfkb/Halo/CPL/Physics1998APexam.pdf [Broken] and...
6. ### Energy Level Diagram

But it's physics, AP physics actually. I've asked a few chem buds and they don't get it.
7. ### Energy Level Diagram

Anyone? Anyone?
8. ### Energy Level Diagram

Homework Statement A monatomic gas is illuminated with visible light of wavelength 400nm. The gas is observed to absorb some of the light and subsequently emit visible light of both 400nm and 600nm. The initial state is -5.0 eV and the ionized atom (continuous energy levels) is 0 eV. a) Draw...
9. ### Underwater Pressure sunken ocean liner

No, I know that. That's why I subtracted one. My work is right though, yes?
10. ### Underwater Pressure sunken ocean liner

Homework Statement While exploring a sunken ocean liner, the principal research found the absolute pressure on the robot observation submarine at the level of the ship to be 413 atmospheres. The density of the surrounding saltwater was 1025kg/m^3. Calculate the gauge pressure on the sunken...
11. ### Conservation of Energy/Angular Momentum

Nevermind. I was being stupid and forgot they are two different H's
12. ### Sphere rolling down a ramp linear acceleration

Oooh okay. That really helps. (I didn't originally use force equations to find the linear acceleration). I used vf^2 = vi^2 + 2ad. Is the correct answer: (2mgsin(theta))/7?
13. ### Conservation of Energy/Angular Momentum

Okay this is going to sound really confusing but am I on the right path for the block one? I got to the point where gh = 1/2(vi)^2 - ukg(cot(theta))h At this point, do I plug in what I got for H in part (a) since it wants it says "in terms of h found in part a"? What exactly are they asking...
14. ### Sphere rolling down a ramp linear acceleration

Yes, I did. Thanks for your help. Would you be able to explain how I would get the frictional force then? Is it just F = m times that or is it -mgsin(theta) because it's on a ramp?
15. ### Sphere rolling down a ramp linear acceleration

That requires that I find the frictional force, but that's the next question so there has to be some way I can do it without knowing the friction force.