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Comments:
<0> bye me :)
<1> hello
<2> hi
<3> Hey.
<4> E = MCw
<4> MC2*
<5> I've become emotionally stable
<5> unfortunately stable on the wrong side
<6> i'm stuck on this problem... there is a wooden block that a diver is holding in the water, and I calculated the buoyant force.. then it asks what force the diver pushes with and i did buoyForce minus (m)(g)... but then it asks how muchw ork it would take to push the block 2m further... I was thinking W= F*d, d is obvious but i dont know what force it will take to push it 2m... is it the buoyant force * 2m?
<6> *in fresh water
<6> and by 2m further i mean 2m deeper
<7> http://antwrp.gsfc.nasa.gov/apod/ap070205.html
<7> a pretty damn amazing pic, of firewoks, lightning, perth at night and a comet all in one frame
<8> yeah but panorama
<9> murz: yes
<9> well, boyent force-mg
<9> *buoyant
<10> Nice pic, Dadaless.
<11> where would the maximum electric field intensity be for charges located symmetrically on a circle in the x-y plane?
<9> you should be able to figure that out....
<11> JabberWalkie, well, i know that at z=0 everything cancels...so wouldn't it be at some infinitessimally small distance from the z-axis?
<9> First find Abs[ E(x,y,x)] then find the points where all the first order partals are zero...
<9> then look at the determinates of the submatrices of the Jacobian to determine if it is a max, min, or a saddle point
<9> thenostradamus: and no
<9> i forget the exact patter than dertermines if its a max min or saddle point, but im sure you can look that up
<9> *pattern
<9> there are some shortcuts you can take
<9> just look at Abs[E(0,0,z)]
<9> take the derivative wrt z and and find the points where it is zero
<11> JabberWalkie, yeah, i think there must be some type of shortcut as this is an intro to electromagnetic engineering
<9> one will be in the center
<9> there will be 2 other, one on either side
<9> thenostradamus: well, you should be able to do vector calc if you are doing electromagnetics...
<9> especially if its with engineering :)
<9> although the shortcut is lacking riguor
<9> it will get you the right answer, but you cant really say its the right answer unless you do it the hard way :)
<9> but im sure they will let you do it the easy way
<11> lmao, probably...nothing too difficult has been taught so far;-)
<12> what is dipole moment (p) in terms of charge (q)?
<13> q*distance.
<12> thanks
<13> Between the two point charges or opposite sign, of course.
<12> alright
<12> it wouldn't be a dipole if the point charges are the same sign, right? :P
<12> and a quadrupole moment is 2*q*d, right?
<12> * 2*q*d^2
<13> Yeah. The later.
<9> hey, if someone has time to write some latex Solutions to the POTW that would be great :)
<9> just an idea......no need to run and hide...
<9> ill get Manyfold to do them....
<9> just a quick question....
<9> how do we sleep when our beds are burnin!!
<14> easily. carbon monoxide will help you sleep.
<9> awesome...
<14> i
<14> damn focus.
<14> that was meant for vim.
<1> a common error Defty
<1> :q!
<10> http://www.cnn.com/2007/US/02/05/space.love/index.html
<14> the tool I use to open source files doesn't give them focus by default it seems.
<14> oommmggg it's friggin' cold here
<14> it was warm just a minute ago, now it's suddendly creeping cold
<14> it's like.. windy in here ;PP?
<1> I'm in Cleveland, it's -11 with windchill
<14> it's -16C outside, so it's no wonder, but the ventilation changed very suddendly
<1> with 10.5 mph winds
<14> and at least when I crossed a bridge a while ago it was too windy to handle for long ,p
<14> a bridge over part of the sea, :p
<14> we don't use miles here :) I have no idea what that translates to :-)
<14> oh meters
<14> sorry i'm perma dumb
<14> only 5m/s here.
<14> wonder what that's in hours
<14> lol
<14> miles per hour :D?
<14> is that a wind unit
<14> ok right, it's -17 already.. :>
<14> (without windchill, I think.)
<14> ok so that 10.5 mph is 4 meters/second
<14> -26 with windchill it seems
<14> so lovely :p
<1> Where are you?
<14> helsinki, finland
<1> oh
<1> I swear that every third person on IRC is from scandinavia
<14> irc was invented in finland :)
<1> plenty of swedes and finns, and a smattering of norwegians and danes
<14> on certain channels it's possible to have a purely finnish conversation in english, even though it's like 5AM here ,p
<14> happens on ##c++ from time to time etc :p
<14> kinda creepy yeah.
<14> on most channels i'm the only finn though ,p
<14> well i'm not sure, there's bound to be idlers...
<14> k i'll go for a lecture in another part of town
<9> wow, you fins get up early
<15> What's the geometric inverse of a sphere?
<16> a black hole
<9> Samizdat: what is a geometric inverse?
<15> Inverse was not the best word.
<15> As it turns out, what I was after, was "opposite," or "reverse," perhaps. See http://www.daviddarling.info/encyclopedia/P/pseudosphere.html .
<15> hyperbolic geometry
<9> ***y
<15> It is, isn't it?
<15> Very good image.
<15> A reversible joisting stick of infinitely long and sharp point.
<15> Jousting, too.
<9> yeah....but you can never impale anyone :(
<9> slice them inhalf sure...
<16> that's an unnecessarily newtonian view JabberWalkie :P
<16> just renormalise the length :P
<15> You folks are more congenial than those of #math.
<9> i suppose...
<15> On the other hand, to be fair, I didn't come in here with the ten ton attitude, either.
<16> ten ton attitude ?
<15> Obnoxious
<15> They can be.
<16> oh you wouldn't want to
<9> Samizdat: we get those here too...
<16> being obnoxious is our job
<15> Heh
<9> its true...
<16> just ask any of the hosts
<15> I'm getting a Princeton sense here.
<15> Am I close?
<9> pish tosh!
<16> is that anything like a sixth sense ?
<15> That depends on how close I am.
<9> hardly princeton, we have no money
<15> "East Coast" would be too easy a guess.
<9> me neither...
<15> Then I'm rustier than I thought!
<9> im in Canada :P
<15> My next choice was going to be Brandeis.
<16> i'm in the sahara
<9> ahm....
<9> ah
<9> eh
<15> Western provinces, eh?
<9> yep
<15> Saudi Arabia, andrewbryson?
<15> West Coast here: Reno, NV
<16> i wouldn't want to give too much away on chat
<16> but suffice it to say that my country frowns upon freedom
<15> Aight
<15> No pry here.
<16> i could be executed for even the most minor infraction
<15> Ouch.
<16> i kid you not
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