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3:01 AM
Yeah, no clue
 
I honestly feel like this should be covered in a first course on analysis
Did he cover the Cauchy criterion?
We can do that one too
although that won't help with derivatives.
 
Yes, but this guy just spills crap on the board like an HP printer
and taps on his microphone
 
he has a microphone?
 
Can we please not prove the limit? I don't give a shit about it, I believe it
Yes
Because the classroom is too large
 
how many people are in the class o.o
 
3:03 AM
But it doesn't function to well
Like >100
 
@BernardMeurer I have a lecture class with 200 people, the prof just talks normally w/o mic and everyone hears him
efficient sound design
 
@0celo7 Good acoustics I guess
Yeah, not the case, the fucker doesn't like to speak up either
 
@BernardMeurer the fuck?
 
so he mumbles on the mic
 
how are there 100+ people taking analysis?
and that's just one section, presumably
 
3:05 AM
There are like 200 total
It's mandatory for engineering
they replaced Calc with analysis
 
that's ridiculous
 
The course is actually still called "Calculus"
But the prof is an analysis prof from the maths dpt.
and all the bibliography is for analysis
 
> Since we are not told differently, we assume that both capacitors have the same value - C0.
What the fuck
@BernardMeurer why don't you talk to other people
is there a study group?
 
No study groups
 
why not
 
3:14 AM
I'll just figure this out in the course of the week
 
have you been reading abbot as instructed?
 
Because people here don't do that. Once the class is over they all just rush home as fast as possible
@0celo7 When I have time, I did some reading on limits the other day, but it's hard since I need to be home & not busy to do so
 
@BernardMeurer Europe is a strange place
 
Fucking springer link
 
@BernardMeurer Unless someone has explicitly forbidden you to study with your peers you should form a study group. Seriously, the pooling of ignorance is a surprisingly powerful aid to learning.
Go get some study buddies.
 
3:18 AM
@dmckee I'll see what I can do about it :)
 
Odio español ahora
 
BUILD THE WALL
2
 
...
Also my chem class isn't the best
The prof speaks with such a strong accent that I couldn't understand him
 
at least you're not doing graduate level quantum mechanics
 
He kept talking about a series over and over, and i had no idea what he meant
Turns out he was saying "theories"
 
user218912
3:20 AM
or qft
 
a series of ass whoopings for poor students
 
@0celo7 Are you?
 
@SirCumference Don't you dare complain about your Chemistry to me
 
@BernardMeurer What's up?
 
@SirCumference What kind of question is that? Yeah, I'm taking grad QM.
 
3:21 AM
At least you aren't dealing with "quantum field series"
 
But I was referring to @BernardMeurer 's chem class.
 
@0celo7 Why?
 
user218912
@SirCumference it's called inference.
 
@obe It was confusing
 
@SirCumference my Chem course is some hardcore shit
 
3:21 AM
It's not the first time he's done this
@BernardMeurer Oh, you've got it hard
Everyone's chem class is tough
 
@SirCumference i.e 3-dim schrodinger on spherical coordinates on the first week
 
user218912
@SirCumference do you go to a bad university?
 
he goes to Columbia, so probably not
 
@obe Pretty prestigious, so no
 
user218912
yeah right
 
3:22 AM
also what kind of question is that
 
@0celo7 Stop assuming things
 
user218912
columbia wouldn't have a bad prof.
 
@obe He's not bad
 
@obe but they have bad students apparently.
 
user218912
lol
 
3:23 AM
And columbia's got some good profs
 
user218912
of course...
 
@BernardMeurer Getting some study buddies of the apposite sex is optional but always a bonus.
 
user218912
isn't it ivy league?
 
@obe None are perfect tho
 
3:24 AM
@dmckee Now you're speaking my language
 
@dmckee I found my girlfriend that way!
 
My chem prof is pretty good, but he's just got such a thick accent
I think he said he was Swedish
 
I figured he was Indian
 
@0celo7 I'll never let my daughter be in a study group
 
"now we squire X"
I say "theorem" in an Indian accent now
 
3:25 AM
@BernardMeurer In astronomy we jumped straight from classical mechanics in the first three classes to degenerate gases and QM
 
@SirCumference Which school you going to dawg?
 
also "this is trivial"
 
I guess I was expected to know stats to a really good extent
 
user218912
I probably should never get a girlfriend because of the fact that I don't stay with anything for long. I don't want to hurt someone's feelings that way.
 
@BernardMeurer I don't prefer to reveal much about me online
 
3:37 AM
I log into skype to find one of my friends sending me this
Oh screw this
Somebody's having too much fun with the star button
 
rob
Is the star wall broken, or are you guys messing with it again?
 
@0celo7 Whoa...
 
94 messages moved to Trash
 
@DavidZ Hm?
Why was that moved to trash?
 
What the hell is going on?
 
3:39 AM
@0celo7 @DavidZ Is being arbitrary and trashing messages it seems
 
user116211
@0celo7 David Z has just used The Force.
 
@BernardMeurer conversation of that nature is inappropriate for this room
 
user218912
what was it about again?
 
@DavidZ The man's school? How come?
@DavidZ Rob saying good evening?
 
Pushing people to reveal personal details
 
3:41 AM
Meh.
 
And the general lack of respect for boundaries
 
user218912
he just wants attention though... I think
 
@DavidZ Oh yes, we were borderline torturing the kid
 
I don't even know what a boundary is.
 
@0celo7 It's like the social analogue of a limit
 
3:42 AM
I know what a topological boundary is.
 
user116211
@obe :(
 
rob
Let's put a lid on the meta-discussion, please.
 
@rob I'll endorse that
 
@rob I'm sorry but this is silly. A bunch of messages get thrown in the trash, sure, whatever, but the guy get's suspended and no one has a clue why and that's somehow fine?
 
(you endorse anything that reduces fun)
 
user116211
3:44 AM
Let's only talk physics.
 
Love the cleansing. Real good job
@MAFIA36790 Ok, Banach spaces
 
user116211
._.
 
not yet?
 
rob
Meta-discussion belongs elsewhere. Thanks for changing the subject.
2
 
user116211
no.
 
user218912
3:45 AM
I need to prove wick's theorem
 
@rob Where then?
 
user116211
@rob I'm good in that ritual.
 
@rob Because right now it sure seems like you're just avoiding accountability for an uncalled for suspension
 
@obe combinatorics
 
You or @DavidZ, whatever
 
user218912
3:46 AM
@0celo7 yeah...
 
@BernardMeurer The suspension was automatic.
Someone flagged, it seems.
 
user218912
you use induction or something
 
user218912
idk if it's in the notes
 
@0celo7 What even?
This makes no sense
 
Not sure. I can't find the message, which is suspicious.
But it doesn't say that it was a moderator who suspended.
 
user218912
@0celo7 because the messages were deleted?
 
@obe
 
When I get suspended in a minute you can check to see what it says for me.
 
user218912
@JayJay thanks
 
30-minute suspensions are always done automatically, in response to flags. Not imposed by mods. As rob said, please leave it at that.
 
user116211
3:48 AM
@0celo7 It is written automatically suspended.
 
@MAFIA36790 What's what I just said.
 
David Z has frozen this room.
 
Indeed. Unfounded accusations are something we take quite seriously here.
I'm putting the room on hold for a while, and when it comes off hold, I expect this conversational thread to be done.
9 messages deleted
let's say 10 minutes
 
4:04 AM
David Z has unfrozen this room.
 
Hi, everybody.
 
user218912
hiiiii
 
I didn't even realize mods had freeze breath. That's cool. Yo, do y'all have heat vision too?
 
They can burn your testicles
 
user116211
Well, a new beginning.
 
user116211
4:09 AM
Only talk maths.
 
user116211
@DanielSank o/
 
This is so dumb
 
@DanielSank it can only unfreeze, so kind of weak I guess
 
user218912
@MAFIA36790 no :( maths is scary
 
You can't joke about anything here without the bot at your throat
 
user116211
4:10 AM
@SirCumference You insulted the ducks again.
 
user218912
ducks have feelings too :(
 
Haha!
 
@MAFIA36790 \o
 
Make ducks great again
 
user116211
Build ducks!!
 
4:11 AM
Uh...
Just got sent this
 
^ WAHAHAHA
 
user116211
again:(
 
user116211
@SirCumference why ?!
 
@MAFIA36790 idk
 
user218912
weird friends
 
4:13 AM
@obe *comrades
 
user116211
As I said, always be aware @SirC; something is wrong with your place.
 
@MAFIA36790 these guys weren't from my school tho
they're high school friends
 
Good night everyone.
 
@0celo7 'Night othello
 
user116211
@0celo7 bye.
 
user218912
4:14 AM
wish i had high school friends at my uni :(
 
@obe just keep in touch
I see them pretty often
 
user218912
on facebook?
 
@obe Nah, irl
 
user218912
i want to see them irl
 
user218912
but they're far
 
4:15 AM
my friends?
Oh
 
user218912
no
 
@obe my best friend is a few states away
we still talk all the time
on skype
 
user218912
well
 
user218912
i'm just lonely af that's why i come here
 
@obe :(
At least you've got math to talk about
No one here likes astronomy... :/
 
user218912
4:21 AM
i liked astronomy at some point
 
then?
 
@SirCumference I liked astronomy, then Pluto wasn't a planet anymore and now I seek revenge
 
@BernardMeurer yeah but the same guy who got pluto declassified found another planet to replace it
 
user218912
lol
 
user218912
really?
 
4:23 AM
@SirCumference I'll kill one of your children and put some random one in their place, so you see how it feels
 
@BernardMeurer difference is, though, that pluto was never a planet
 
user116211
@BernardMeurer He didn't kill the planet.
 
so that wasn't my child
nor was it ever
 
user218912
was adopted
 
user116211
His status was just changed.
 
4:24 AM
@BernardMeurer and this time it's a legit child i'm getting
 
@MAFIA36790 Yes, the kid's status will change from alive to dead
 
user116211
._.
 
I have now met four Physics.SE users in real life.
 
@DanielSank how? who?
 
Could someone please make that a badge?
 
user116211
4:25 AM
@DanielSank You said it earlier, right?
 
@DanielSank "Fight me IRL" badge
 
user116211
@DanielSank You said it that too ;P
 
@SirCumference ChrisWhite, BernardoMeurer, A guy whose username I don't remember (I know his real name but I won't say it here), and Heather.
 
@DanielSank You met heather?
 
@MAFIA36790 Well, last time it was probably three. Now it's four.
 
4:26 AM
How? When?
 
user116211
@DanielSank heather, the latest ?
 
@SirCumference Yep. She toured my lab with her Dad (who is awesome). Shout out to @heather's dad.
@MAFIA36790 Yes.
 
@DanielSank that's the weriest...
 
ChrisWhite, we deeply miss you. Please come back
 
user116211
@BernardMeurer Please don't start that again.
 
4:27 AM
@BernardMeurer #MakeChrisWhiteAgain
 
user116211
Chris has left for good.
 
@MAFIA36790 I am entitled to love
@SirCumference That just sounds racist
 
@BernardMeurer True...
:(
 
user116211
You are sure to but that will not make him come again.
 
user116211
We all love chris.
 
4:27 AM
@MAFIA36790 Do you mourn the dead because you think they'll come back?
 
user116211
But his was a hasty and a bit over-reaction.
 
user116211
@BernardMeurer Yes, they will come back in the Judgement Day.
 
user218912
idk what happened that caused him to leave but i guess i'll never know because it's forbidden to talk about?
 
user116211
Also, post-apocalypse zombie scenario.
 
user116211
@obe it's not forbidden; it's just too speculative to talk.
 
user218912
4:29 AM
was anyone there when it happened?
 
user116211
I was not.
 
@obe Nobody knows what happened
It's an unsolved problem in Physics (SE)
I used a quote from someone on SE in my yearbook
Oh god I just realized
It was Chris
 
ACM knows
 
user218912
really?
 
@obe Yes.
 
user218912
4:34 AM
how do you know?
 
Feb 2 at 5:34, by user54412
One thing to note is that comet-hunting used to be at least 50% of astronomy (back a couple hundred years ago). Now there might not be 50 people in the world who research comets.
It was Chris!
 
@MetaEd We're being good boys I swear
 
@MetaEd Are you a bot?
 
user116211
Hmm; maybe.
 
user116211
@MetaEd o/
 
4:36 AM
@MAFIA36790 "o/"?
 
It's a handwave.
 
user218912
dude stop
 
@obe Tell it to them, I can't make this up
 
user218912
gnight
 
4:37 AM
'night
 
user116211
We have a rough day; so please be cool with us @MetaEd.
 
Tough day in the lab?
 
Night folks!
 
user116211
@BernardMeurer bye.
 
user116211
@SirCumference Is someone forcing you to listen to this commie crap?
 
user116211
4:41 AM
I'm somewhat worried about your safety and mental well being ;/
 
user116211
So much commie dose.
 
4:56 AM
@MAFIA36790 I think they think it's funny
since i told them about the kids outside
now they've been calling me "comrade"
 
5:11 AM
Hey, if anyone's got the time, would you take a look at this and then the comments the OP has posted on my answer?
 
5:23 AM
@JayJay Lemme make some corrections
First of all you should be writing $\dot{ϕ}$ instead of $\mathrm{d}ϕ\over \mathrm{d}t$
It's nicer
@0celo7 I thought you were asleep
Ya know, a year ago I thought I was pretty knowledgeable in math (at least compared to everyone I knew). You guys changed that...
 
user116211
@JayJay, use $$ $$ for blocks; it works as \displaystyle here.
 
@MAFIA36790 I edited it
Being peer reviewed
Oh son of a...
You literally applied everything I did ;(
 
user116211
Hmm, it seems it got rejected due to the simultaneous edit.
 
@MAFIA36790 Monster
 
user116211
@SirCumference I didn't know you were editing.
 
5:37 AM
@MAFIA36790 I know :P
I'm joking around
@MAFIA36790 I'll try and make another edit
Replacing $\mathrm{d}ϕ\over \mathrm{d}t$ with $\dot{ϕ}$
 
user116211
Is it necessary?
 
Idk if it's necessary but I guess I need the rep
Well I'm planning on giving some away
To the poor
You're right, that's a stupid choice
@MAFIA36790 Say, why's your primary SE stats and not physics?
 
user116211
For the pic.
 
It's a dog?
 
user116211
yes.
 
5:41 AM
Oh now it all makes sense
Wait, no, I'm still confused
 
@MAFIA36790 Thanks for the edits
 
@JayJay ;-;
Forgotten and unloved...
 
Oh, @SirCumference thank you so much for your suggestions too, they were absolutely wonderful: never in the history of stackexchange have such edits been suggested....
 
@JayJay I'm jk
XD
Well, if I do say so myself...
 
Well what do you know..I am too :)
 
5:45 AM
@JayJay Ik, realized a bit late
Anywho, I need to go to bed
It's 2:00am
'Night
 
2.00 am??!!
 
@JayJay Yeah?
 
The latest I've ever hit the sack is 12.30.so..
 
@JayJay Amnesia
No, wait, insomnia
I'm tired
It sucks
 
Hurry along to bed then. Goodnight.
 
5:47 AM
@JayJay I'll try
 
user116211
0
Q: Exam Question: Classical Mechanics

JLuiThis was a Question on my exam that stumped me! I think I got lost in the math. I really want to know how to solve this, because it is very simple. Thanks in advance Question: A mass m goes up an incline which is at angle $\theta$. It experiences linear drag $\vec{F_{drag}}=-bv\vec{v}$ as well ...

 
user116211
I don't get why they use classical mechanics for such things.
 
user116211
Worst thing is that both Newtonian Mechanics and Classical Mechanics have been used.
 
user116211
@sirC, You can suggest an edit on this post.
 
user116211
Remove the unnecessary tags; add the homework tag; edit the MathJax.
 
user116211
5:51 AM
Oh; he is gone.
 
Back to the OPs comments, do you think the emf in one loop should be influenced by the flux through the other loop?
 
user116211
@JayJay You mean mutual induction?
 
@MAFIA36790 I'm on it
Can't sleep
 
user116211
@SirCumference okay; I was just about to edit that; go on.
 
@MAFIA36790 That crossed my mind but, I don't see how it comes to a factor of 1/4
 
user116211
5:53 AM
Frankly, @jay, I've not read the post; so can't tell anything.
 
Oh damn
I was replacing $\mathrm{d}v\over \mathrm{d}t$ with $\dot{v}$ just to make it nicer, but I realized it kind of falls apart in the last equation
gimme a min
 
user116211
Ping me when you are done.
 

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