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Results tagged with homework-and-exercises
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user 22876
Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.
2
votes
1
answer
614
views
Proton scattering off electrons
I'm looking at a question which starts off as:
A proton is travelling through a material and scattering the electrons in the material. Express the scattering angle in terms of the impact parameter …
- 217
2
votes
1
answer
8k
views
Specific heat capacity of a 2D free electron gas
I have got so far the 2D density of states as $g(\epsilon)=\frac{Am}{\pi\hbar^2}$ where $A$ is the area of the "square" and $m$ is the the electron mass. Then I have found an expression for the the ch …
- 217
1
vote
Conversion of energy to mass with radioactive decay
Work it out both ways and compare the difference in mass, you should get it being zero to all intents an purposes
- 217
0
votes
Navier-Stokes system
For the first part look up the difference between Lagrangian and Eulerian reference frames and also total derivative. Second bit read about the Reynolds number of a system.
- 217