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Comments:
<0> microacg: both first and second newton's laws are just definitions
<1> uh
<1> the first law isn't a definition
<1> I don't believe
<1> the second one is, but it was later derived from quantum physics
<0> you don't believe in what?
<1> rather, it was found that quantum particles experience force the same way as cl***ical particles
<0> you can't prove first law
<1> I don't believe that newton's first law is a definition
<1> it is a prediction
<1> based on observation and reasoning
<0> what does it predict?
<1> that an object at rest will stay at rest unless an external force acts on it, and an object moving at a constant velocity will maintain that velocity until an external force acts on it
<1> there might be one or two other nuances I'm not familiar with offhand
<0> but "force" has not been defined yet
<1> the word force exists in our language
<1> you don't need a mathematical definition to know what it is
<1> you just can't compute it before you get the math definition
<0> so force has no physical meaning
<2> Can all metals except gold be burned?
<1> what is 'physical meaning'
<0> a concept with no definition or connection to another concepts is meaningless
<1> I don't understand what you are complaining about
<0> how do you know that an object has no external force acting on it?
<1> we knew long before newton's laws that a force is a push or a pull, newton's laws just clarified on that and talked about the effects
<1> if the vector sum of the forces acting on an object is 0 then it has no net force acting on it
<1> thus, the object won't accelerate
<0> but you can't detect that force
<1> who is 'you'
<1> me?
<1> the forces are there no matter how we observe them
<3> I'm pretty sure I'd notice two big dudes pushing me on both sides of my body.
<3> :P
<0> since so?
<3> Even if their forces cancel.
<0> ooops
<0> so?
<1> maskd what is your point
<3> <0> but you can't detect that force
<1> pseudo has a point
<4> pressure sensors
<1> but you can idealize force as acting on the center of the object :D
<1> I made a spreadsheet to step a numerical approximation of two large bodies in space gravitationally affecting each other
<1> with easily customizable initial conditions
<1> I've started to make a program to animate it but that's not done
<5> is this book good for physicists or is it more of an engineering book
<5> http://www.amazon.com/Mechanics-Dover-Books-Physics-Hartog/dp/0486607542/sr=8-1/qid=1168039775/ref=pd_bbs_1/002-0840493-3731226?ie=UTF8&s=books
<1> hard to tell
<1> let me see if I can figure that out, hold on
<5> thanks
<1> looks a lot more like engineering at a glance
<5> okay
<3> I was interested in getting that to learn cl***ical mechanics.
<3> But that does look like an engineering book.
<3> Check varational principles of mechanics, I think it's called.
<3> It's also a dover book.
<3> That's a physicist's book for sure.
<1> the book linked to above is probably for statics
<1> or at least in part, not too much 'physics' over 'engineering'
<6> Hello :-)
<7> greetings
<7> i guess my greeting was not of sufficient enthusiasm :(
<8> Due to a SpaceTime distortion he will not see your greeting until 2037.
<5> pseudoXh4: would you recommend that for a beginning Physics student
<1> aRevolutionist: lolol nooo
<3> aRevolutionist, 'course not. :P
<3> Beginning physics, get Halliday/Resnick or something.
<1> haha
<1> halliday/resnick
<5> what would you recommend for a current student of mathematics but a beginning physics student?
<1> if you are motivated, tipler
<1> might be a bit heavy
<5> i am extremely motivated
<1> I don't know which are the best 'easy' books, tipler is intense but gooe
<1> good*
<5> i am seeking an intense book
<1> tipler
<1> volume 1
<1> don't take my word for it, but you can look into that one
<2> What metals can be burned?
<5> Physics for Scientists and Engineers, is that the title of the Tipler book?
<3> aRevolutionist, don't go for Tipler.
<3> The problems are so whack.
<5> why are they "whack"
<5> does anyone know the frequency children can hear that adults can not?
<1> like
<1> probably 18000 to 20000?
<1> HZ
<9> Depends how much your ear hairs have degenerated.
<1> loud music for year after year probably doesn't help lol
<1> humans have trouble hearing low volume low frequency sounds also
<1> the threshhold of hearing curves upwards in the lower part of the frequency scale
<1> useful, but strange at the same time
<9> It's interesting to try to hear high frequency sounds, because you can feel them, but your ears can't register.
<1> have you ever heard shepperd tones?
<1> those are pretty cool
<1> shepherd tones rather
<1> shepard
<1> jeez
<9> You mean the ones that always go up, but secretly cycle around?
<1> yeah
<10> jabberCANUCKie
<11> flyback: better belive it
<9> Wish I could be a Canuck
<11> boooo ya, world juniors bitches!
<11> 3rd time in a row!
<11> took them ruskies to town :)
<10> you will pay for william shatner singing and other canadian acts of terrorism
<11> i think the william shatner singing is far less a travsity when compared to the terrorist acts of the united states
<9> William Shatner was a great actor.
<9> In Over the Hedge.
<9> An oppossum. <3 Cl***ic!
<10> <11> i think the william shatner singing is far less a travsity when compared to the terrorist acts of the united states
<10> oh?
<10> name one
<11> flyback: iraq
<10> oh please
<10> don't even start that nonsense
<12> nonsense? perhaps that is more fit for #politics ?
<10> yeah
<10> he just couldn't wait to get in a political jab
<10> when I was joking about bad canadian culture
<8> Eh?
<13> ok now
<7> now?
<7> what about then ?
<7> not to mention the future
<7> other time periods will be feeling all left out
<14> when? :)
<15> canadians are evil :)
<15> everyone is evil except me that is
<15> :(
<15> :)
<15> % 1+1
<16> Manyfold: 2
<1> @botsnack
<16> :)
<15> Integrate [g[x]/(x^3+x^2+x),x]
<15> % Integrate [g[x]/(x^3+x^2+x),x]
<16> Manyfold: "Time limit exceeded for computation."
<15> :(
<1> % Integrate [g[x],x]
<16> microacg: Integrate[g[x], x]
<1> that was useful
<15> % Integrate [(x-1)]/(x^3+x^2+x),x]
<16> Manyfold:
<16> ToExpression::sntx: Syntax error in or before "Integrate [(x-1)]/(x^3+x^2+x),x]".
<16> ^
<16> $Failed
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