Recent content by SHISHKABOB
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Adiabatic Expansion Pressure Temperature Relation
Thanks, that did it!- SHISHKABOB
- Post #6
- Forum: Introductory Physics Homework Help
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Adiabatic Expansion Pressure Temperature Relation
Oh wow wait I think I got it, I took the natural log of the initial substitution and I think that's exactly what I needed to do. I can nicely separate P and T from each other using log properties, and no weird exponents. I could take the log, of course, because a ln(constant) is still some...- SHISHKABOB
- Post #4
- Forum: Introductory Physics Homework Help
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Adiabatic Expansion Pressure Temperature Relation
I get $$\frac{dT}{dP} = \frac{\gamma}{\gamma - 1} \frac{T}{P^{\gamma + 1}}$$ Which evaluates to $$\frac{dT}{dP} = \frac{f+2}{2} \frac{T}{P^{\frac{2f+2}{f}}}$$ and I really don't know how to proceed from there.- SHISHKABOB
- Post #3
- Forum: Introductory Physics Homework Help
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Adiabatic Expansion Pressure Temperature Relation
Homework Statement The problem is in the context of convection in the troposphere Show that when an ideal gas expands adiabatically, the temperature and pressure are related by the differential equation \frac{dT}{dP} = \frac{2}{f+2} \frac{T}{P} Homework Equations Ideal gas law PV = nRT...- SHISHKABOB
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- Adiabatic Adiabatic expansion Expansion Pressure Relation Temperature
- Replies: 9
- Forum: Introductory Physics Homework Help
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Normalizing Wave Functions Over Multiple Regions
Homework Statement I need to normalize the following wave function in order to determine the value of the coefficients. This is from the basic finite square well potential. \Psi(x) = Ae^{k_{1}x},for \ x < -a/2 \Psi(x) = Csin(k_{2}x),for \ -a/2 \leq x \leq a/2 \Psi(x) = De^{-k_{1}x}, for \ x...- SHISHKABOB
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- Functions Multiple Wave Wave functions
- Replies: 2
- Forum: Advanced Physics Homework Help
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Electric Potential, and Potential Difference
Yeah if you go from point A ---> point B, and you've got a potential of 100V at point A and 0V at point B, then the potential difference is B - A = 0V - 100V = -100V. Electric potential is a value that tells you about a point in space. You can think of it as a "property" that is describing the...- SHISHKABOB
- Post #2
- Forum: Introductory Physics Homework Help
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Graduate Jeans instabiity & gravitational collapse
That's basically the thermal energy of the cloud. All of the particles in the cloud (hydrogen atoms in this case) have their kinetic energy partitioned into the degrees of freedom of the system. Hydrogen atoms have three degrees of freedom because they can only move around in three directions...- SHISHKABOB
- Post #2
- Forum: Astronomy and Astrophysics
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Graduate What is the significance of the Jeans length in cloud collapse?
Yeah it is, but since most gas is generally ~75% H and ~25% He or something close to that, it's easy to figure out the average mass per particle.- SHISHKABOB
- Post #2
- Forum: Astronomy and Astrophysics
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Plummer Sphere, Density from Potential
ohhh yes you are right, thank you. That explains a lot :redface:- SHISHKABOB
- Post #3
- Forum: Introductory Physics Homework Help
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Solve Supernova Problem: Apparent Magnitude at Max Luminosity
you want to do something like \frac{F_{sn+g}}{F_{g}} = 10^{\frac{m_{sn + g} - m_{g}}{-2.5}} I just solved your equation for the ratio of the fluxes. Now we also know that we can just add up the fluxes, i.e. Fsn + g = Fg + Fsn does this help? Remember that if you get a number...- SHISHKABOB
- Post #5
- Forum: Introductory Physics Homework Help
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Plummer Sphere, Density from Potential
Homework Statement It wants me to get the density function of a Plummer sphere from its gravitational potential. Homework Equations Plummer sphere potential: \Phi (r) = -\frac{GM}{\sqrt{r^{2}+a^{2}}} where phi is the potential as a function of radius from the mass, M. And a is a...- SHISHKABOB
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- Density Potential Sphere
- Replies: 2
- Forum: Introductory Physics Homework Help
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Solve Supernova Problem: Apparent Magnitude at Max Luminosity
So basically you've got the following: mg, msn, and mg + sn where mg = 17.6 and mg + sn = 18.0 So we know that mg + msn is NOT mg + sn but we do know that Lg + Lsn = Lg + sn Do you have any equations that relate luminosity to magnitude? Or even a relationship between flux and...- SHISHKABOB
- Post #2
- Forum: Introductory Physics Homework Help
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One corner short of a pentagon What does it mean?
https://www.youtube.com/watch?v=rNBWf54RvsI This song has oodles of them.- SHISHKABOB
- Post #30
- Forum: General Discussion
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Guess Who Didn't Say it? Bonus Points for Knowing the True Story
http://marioremembers.ytmnd.com/- SHISHKABOB
- Post #45
- Forum: Fun, Photos and Games
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How Do You Solve a Glancing Elastic Collision in Physics?
well when we write out the momentum in x and y we get x: mv_{1,x} = mv^{'}_{1,x} + mv^{'}_{2,x} and y: 0 = mv^{'}_{1,y} + mv^{'}_{2,y} where the prime denotes "after the collision" so mv_{1} = mv^{'}_{1} + mv^{'}_{2} is really only half of it. But can you see how you can use...- SHISHKABOB
- Post #8
- Forum: Introductory Physics Homework Help