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Charlie
Charlie
12:12 AM
I've been asked in a comment to an answer I've given if the Z boson can be observed as a free particle, is the answer yes? I see it has a very short half-life
 
Charlie
Charlie
12:56 AM
someone else provided the answer, nvm
 
 
4 hours later…
Captain Bohemian
Captain Bohemian
4:55 AM
I think I have the syndrome which is in some sense contrast to the impostor syndrome.
 
 
6 hours later…
Captain Bohemian
Captain Bohemian
11:19 AM
Where is Neowise?
I only saw the crescent moon.
 
 
2 hours later…
Johan Liebert
Johan Liebert
1:09 PM
Can someone tell me how many degrees of freedom does tetra-atomic non-linear gas molecule have? (Given that all the modes of energy are active). If possible please tell me the general rule to find it?
@CaptainBohemian same here. I hate those clouds (at least for now)!
 
Yuvraj
Yuvraj
1:26 PM
@FadedGiant miss you loong:P
 
Charlie
Charlie
@JohanLiebert Do you not need to specify the structure of the molecule to determine it's number of degrees of freedom? We don't know which vibrational modes may be allowed
 
John Rennie
John Rennie
2:12 PM
@JohanLiebert the total number of DOFs is 3N, so that's 12 for a tetra-atomic molecule.
That's 3 translational, 3 rotational and 3N - 6 vibrational.
 
Charlie
Charlie
2:53 PM
conclusive proof that I learned nothing in my degree lol
 
Johan Liebert
Johan Liebert
3:21 PM
@JohnRennie yes, sir that's what i have learned. But for this question seems to be using twice the value of number of vibrational modes. And the same solution is given on other sites too
Sir, can you please tell where i might be going wrong?
 
John Rennie
John Rennie
Each vibrational mode contributes R to the heat capacity not R/2
I must admit I've never understood precisely why, but I believe it's because vibrations have both KE and PE.
A single vibrational mode contributes R/2 due to its KE and another R/2 due to its PE, so R in total.
 
Johan Liebert
Johan Liebert
Ok. So i was confusing the number of vibrational modes with tge value they contribute to the specific heat capacity. Thanks sir.
Also, sir can we apply equipartition theorem to real gases?
@JohnRennie
 
John Rennie
John Rennie
Yes
 
Johan Liebert
Johan Liebert
Will energy be equally distributed among total kinetic energy of the system and the total potential energy of the system (due to intermolecular interactions)?
 
John Rennie
John Rennie
No, or at least assuming I understand what you're asking the answer is no. After all, the PE of interactions due to chemical bonding exists even at absolute zero when the KE is zero.
 
Johan Liebert
Johan Liebert
3:31 PM
@JohnRennie OK! Thanks.
 
 
1 hour later…
Physics Meta
Physics Meta
4:35 PM
0
Q: Confusion about rejection of edit suggestion

ɪdɪət strəʊləI saw that I had several edit suggestions rejected so I decided to take a look at them, out of curiosity. While most of them were fair, or at least understandable, there was one that I found very weird, especially due to the reasoning of the rejection and what came after it. In particular, in the...

discussion
 
Physics Meta
Physics Meta
5:23 PM
2
Q: How do tags get associated badges?

honeste_vivereI have a general question about how topic tags become associated with a vote-based badge. For instance, if I receive 100 upvotes on answers for at least 20 non-community wiki answers with the associated the tag astrophysics, then I get a bronze astrophysics badge. In contrast, if I get (current...

support bug tags badges
 
 
3 hours later…
Captain Bohemian
Captain Bohemian
8:35 PM
[On the nights around its closest approach – although you’ll probably still need binoculars to spot this celestial visitor – the comet will be visible at the same time we see a beautiful waxing crescent moon in the western twilight sky.
The comet has been gradually appearing higher each night. You’ll find it near the Big Dipper asterism, as seen in the evening charts, above and below.](https://earthsky.org/space/how-to-see-comet-c2020-f3-neowise?fbclid=IwAR1WQLBhimqJv-R58Pw26lIZDM76UauQfpdaJ3uHnilA4rDpDsUMYLN39bo) I only saw the crescent moon. Is it because I watched the sky too early? Do I…
 

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