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1. Particle Physics: Partial Decay Widths and Branching Ratios

Hello there, This isn't specifically homework, it is study. I'm having a difficult time trying to understand how to calculate/estimate partial decay widths, \Gamma[\itex], and Branching Ratios. I haven't found very clear information online so far. Here's just an example below that I'd like...
2. Period of Harmonic Oscillator using Numerical Methods

I think I need to determine it more accurately than just using my eyeballs. Later on in the problem sheet I've given, I am required to include damping forces, which will make it harder to determine period using the method you've described. I am required to modify the MATLAB program I've written...
3. Period of Harmonic Oscillator using Numerical Methods

I would used EXCEL, but I am required to determine the frequency and therefore the period using only MATLAB.
4. Period of Harmonic Oscillator using Numerical Methods

I just realized this a second ago. Thank you, Chestermiller and D H, this is great help. As per my original question, does anything know how I find the period of the oscillations? Do I just use a fourier transform of some kind in MATLAB to find the frequency and then use that to find the...
5. Period of Harmonic Oscillator using Numerical Methods

So, am I right or wrong in saying that a_{n} is just -ω^{2}_{0}x, with x(t=0)=0 and ω0 = 1? So how would I write a_{mid}?
6. Period of Harmonic Oscillator using Numerical Methods

The way I initially wrote 5 and 6 here were typos, sorry. I used item 1 because that is basically what the initial acceleration is, as stated in the question: \frac{d^{2}x}{dt^{2}}=-\omega^{2}_{0}x, so I subbed in the angular frequency (\omega_{0} = 1) and x(at t=0)=1 to get my initial...
7. Period of Harmonic Oscillator using Numerical Methods

I know, but I don't know how to do this.
8. Period of Harmonic Oscillator using Numerical Methods

Sorry, I should have written the initial equation of motion as: \frac{d^{2}x}{dt^{2}}=-\omega^{2}_{0}x Basically, I forgot the 'x' on the LHS when I was writing the OP. This will mean that a = - 1 (I forgot to add the 'minus' sign), because x (t=0) = 1 and w = 0. The velocity remains v...
9. Period of Harmonic Oscillator using Numerical Methods

Homework Statement Numerically determine the period of oscillations for a harmonic oscillator using the Euler-Richardson algorithm. The equation of motion of the harmonic oscillator is described by the following: \frac{d^{2}}{dt^{2}} = - \omega^{2}_{0}x The initial conditions are x(t=0)=1...
10. Finding radius of nucleus from semi-empirical mass formula?

I'm bumping this question up. Any help greatly appreciated. Thanks.
11. Deriving Expression for Population Fraction (Statistical Mechanics)

Homework Statement A quasi-3 level solid-state laser gain medium consists of a ground state manifold containing two energy levels within which a single electron can be promoted, with the second energy 10meV above that of the lowest level. A. Where the gain medium is not optically pumped...
12. Finding radius of nucleus from semi-empirical mass formula?

Homework Statement The nuclei ^{41}_{21}Sc and ^{41}_{20}Ca are said to be a pair of mirror nuclei. If the binding energy of ^{41}_{21}Sc and ^{41}_{20}Ca is 343.143 MeV and 350.420 MeV, respectively, estimate the radii of the two nuclei with the aid of the Semi-Empirical Mass Formula...
13. Quantum Mechanics: Question on Angular Momentum

Thanks TSny, that helped a lot!
14. Thermodynamic Derivation of Wien's Law?

P is the Radiation Pressure. It relates to the first law of termodynamics definition of work, PdV. Basically, I'm looking to derive Wien's law from the first law.
15. Thermodynamic Derivation of Wien's Law?

Can someone tell me how I can derive Wien's law, i.e., \lambda_{max} T = constant where \lambda_{max} is the peak wavelength and T is the absolute temperature of the black body, using the equation, P=\frac{U^{*}}{3} where U^{*} is the energy density. Note: I'm not looking for...

17. Quantum Mechanics: Question on Angular Momentum

Homework Statement Consider a system that is initially in the state: \psi\left(\theta,\phi\right)=\frac{1}{\sqrt{5}}Y_{1,-1}\left(\theta,\phi\right) + \frac{\sqrt{3}}{5}Y_{1,0}\left(\theta,\phi\right)+\frac{1}{\sqrt{5}}Y_{1,1}\left(\theta,\phi\right) Part 1: Find <\psi|L_{+}|\psi> Part 2...

19. Thermodynamics: Derive Modifications for TdS equations for Wire under Constant Force

Anyone? Any help greatly appreciated.
20. Thermodynamics: Derive Modifications for TdS equations for Wire under Constant Force

Homework Statement I have been stuck on the following question for a while now, particularly part B and C, and I'd like some help with it please. I've completed part A already. The Question: (A) Combine the following TdS equations: TdS = C_{v} dT + T\left(\frac{\partial P}{\partial...
21. Configuring op-amp to supply constant current

Homework Statement How could an op-amp with feedback be configured so that it would supply a constant current to some load, even if the resistance of the load changed? Homework Equations None. Just a general question. The Attempt at a Solution I don't really know how to approach...
22. Find matrix of T with respect to the standard basis of R^3

Homework Statement For this whole question let T be a linear transformation from R^3 to R^3 with T(1,0,0) = (2,2,2), T(0,1,0) = (1,2,2), T(0,0,1) = (0,0,1). (a) Find the image of (1,1,2009) (b) Find the matrix of T with respect to the standard basis in R^3 Homework Equations Standard...
23. Physics BSc in Physics to Finance

Thanks very much for your reply. So basically you're saying that physics/math students have greater problem solving ability than quant. finance students or CS students. In this regard, would it be better if I stayed in physics until I finish my Ph.D. and then make a transition into finance or...
24. Physics BSc in Physics to Finance

Hey there, I'm in second year of a physics/math degree. I've had some revelations over the past year and realise that I probably will not be interested in entering into the field of research or academia. I'm looking at the field of finance now (I hear that this is a common career path for...
25. Is it right to say that calculus is advanced algebra?

I was having a discussion with a friend and I wanted to know if the following statement is true: "calculus is advanced algebra and deals with curves (changing numbers), group theory is another branch of advanced algebra. The point is they are all algebra."
26. Physics Careers w/ physics

In a biased overstatement, I would say asking about the career options you can take after your physics degree is like asking exactly when 0.9999...(to infinity) will reach 1.
27. Engineering Physics? Engineering?

Casual physics bashing as usual.
28. Programs How Much Free Time do Physics Majors Have?

I'm majoring in Physics and I have about 32 hours (!!!) a week this semester between lectures, tutorials and labs. This is over 6 hours a day on average but that is spread over the entire day so I'm in university for about 9 hour every day on average, with 3 hours of breaks in between. On top of...
29. Physics Physics Major to related career?

Unfortunately I can't change my major at all, however I can change my minor, just the system we have over here. We have to choose our major at the end of secondary school (high school). The only way I can do that is to drop out and reapply but that has financial implementations. I have to remain...
30. Physics Physics Major to related career?

I was looking into trading or maybe financial analysis, however I'm not too sure yet. I'm only in first year of university and I'm just basically weighing up what I should be aiming for. I was looking at University College Dublin or Trinity College Dublin for this grad programme (I don't...