Recent content by Nekoteko
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Deriving the number of stars as a function of flux and bolometric magnitude.
Okay, got it. Thanks again!- Nekoteko
- Post #12
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
PART B: In order to express my result in terms of the bolometric magnitude, wouldn't I first have to know what it is, which would require comparison with another number of stars of different luminosity, as per m2-m1=-2.5log(L2/L1)? Or I can use m_apparent = m_bol - 5(1-log(r))...but that...- Nekoteko
- Post #10
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
haha I feel silly. Thanks so much for being patient.- Nekoteko
- Post #9
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
So...since r is greater than or equal to √[L/(4πF]...the volume of the region of space defined by all points w/in that radius would simply be the volume of a sphere, (4/3)πr3. N=nV=n*(4/3)πr3...and then just plug in r, which does contain F so N would be a function of F. Correct?- Nekoteko
- Post #7
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
Er, I meant greater flux. I calculated the flux with r < sqrt[L/(4piF)] for N stars and just solved for N because that would give you the number of stars...? I honestly am clueless, I'm sorry. :\- Nekoteko
- Post #5
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
That certainly makes sense. I feel as though I'm still overcomplicating things, however. That would mean the smaller flux is L/4π(√([L/(4πF)]))2??...multiplied by nV (= N) would give you the total smaller flux...F' = N4πF2/L, and then solve for N? That's way too convoluted to be correct, haha.- Nekoteko
- Post #3
- Forum: Introductory Physics Homework Help
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Deriving the number of stars as a function of flux and bolometric magnitude.
QUESTION A star of bolometric luminosity L at a distance r will exhibit a bolometric energy flux F given by F = L/4πr2 in the absence of obscurity. A. Assume that all stars have the same bolometric luminosity L and that stars are uniformly distributed in space with a number density n...- Nekoteko
- Thread
- deriving Flux Function Magnitude Stars
- Replies: 14
- Forum: Introductory Physics Homework Help
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Differential Gauss's Law & Coaxial Cable
Lol I didn't ask for help to piss you off. What do you want me to do if I can't figure something out myself? I understand the forum rules, but if I needed help, I needed help, I don't care how stupid you think my question was (it was). Besides, not like I was asking anybody to solve it for me...- Nekoteko
- Post #6
- Forum: Advanced Physics Homework Help
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Differential Gauss's Law & Coaxial Cable
lol Is there a reason you're so reluctant to help? E_M_C, that's really all the hint I needed! It's so simple, not sure why I didn't see that yesterday. Thanks. :)- Nekoteko
- Post #4
- Forum: Advanced Physics Homework Help
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Differential Gauss's Law & Coaxial Cable
[FONT="Times New Roman"][SIZE="3"]Homework Statement A long coaxial cable consists of an inner solid cylinder, radius a, and an outer thin coaxial cylindrical shell, radius b. The outer shell carries a uniform surface charge density σ. Find the uniform volume charge density ρ that the inner...- Nekoteko
- Thread
- Cable Coaxial Coaxial cable Differential Gauss's law Law
- Replies: 6
- Forum: Advanced Physics Homework Help