# Recent content by pmd28

1. ### Quantum Chemistry: Theory based questions

Awesome! Thank you very much. :)
2. ### Quantum Chemistry: Theory based questions

For 1, right. I think their way of drawing that imaginary horizontal line is a little weird. But your elaboration makes perfect sense. So I have another question now regarding anharmonic oscillators: It seems that when R goes to infinity this graph will become asymptotic. Is the limit of this...
3. ### Quantum Chemistry: Theory based questions

Hey all, I want to preface this with I wasn't sure if I should put this in the physics thread since it is quantum mechanics or in chemistry thread since this is for my Physical Chemistry course. I will gladly move the thread if the community feels it is more appropriate in the physics thread. I...
4. ### Eletric Potential

Nvm I solved it. Thanks :D
5. ### Eletric Potential

The problem states a "-q2" not a "+q2".
6. ### Eletric Potential

Ok, sorry I had a spark of genius. And I've been kind of going with it. I just want to know if I'm on the right track. I set the +q1 charges equal to each other and got: r=.11/(V1-V2) Then I set the -q2 charges equal to each other and got: .035V1=.0765V2 Substitute to get r=.11/(V1-.035V1)...

V=kq/r
8. ### Eletric Potential

See that's the thing, i'm still iffy on the relationshiphs. My best educated guess would be: Since V @ .0335m is equal to zero. That would mean the net electric field at that point is also 0 because E=-ΔV/Δs. Or am I going in a completely wrong direction.
9. ### Eletric Potential

Homework Statement A positive charge +q1 is located to the left of a negative charge −q2. On a line passing through the two charges, there are two places where the total potential is zero. The first place is between the charges and is 3.35 cm to the left of the negative charge. The second...
10. ### Equivalent Electri Force, Find the charge.

ok now I just got a completely wrong answer. My new quadratic equation is q22-9.59e-6+4.8e-6. I got answer of like .00348
11. ### Equivalent Electri Force, Find the charge.

Homework Statement Two objects are identical and small enough that their sizes can be ignored relative to the distance between them, which is 0.3 m. In a vacuum, each object carries a different charge, and they attract each other with a force of 2.3 N. The objects are brought into contact, so...
12. ### Diffraction from a loud speaker

So I set that ratio equal to the ratio of vf/vi and then canceled out sqrt(\gammak/m) because it is constant in both cases therefore the ratio of Sinfθ/Siniθ is equal to sqrt(Tf)/sqrt(Ti) It was correct.
13. ### Diffraction from a loud speaker

Homework Statement Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such a loudspeaker is mounted outside on a pole. In winter, when the temperature is 273 K, the diffraction angle θ has a value of 11°. What is the diffraction angle for the same...
14. ### Speed of a Wave

There are 4 wavelengths.
15. ### Speed of a Wave

Homework Statement A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.6 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? Homework Equations f=1/T...