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Kviz !

Started by mmilan, August 15, 2007, 05:43:27 pm

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ikalo

ajd ovako, na prvu...

elektron

r2d2

nije ajmo dalje.....

sashastar

ajd ovako, na drugu...

neutron
(i nemoj da mi kazes da je na kraju proton)

mmilan

Ja samo da upanem sa rezultatom:

TomaB - 2
sale11472 - 1
r2d2 - 1
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz

mmilan

August 17, 2007, 01:22:15 pm #34 Last Edit: August 17, 2007, 01:28:57 pm by mmilan
Hm... i mene interesuje o kojoj cestici je rec. Nesto mi ne pada nista na pamet

Ponudjeni odgovori nisu tacni:

elektron: spin 1/2, masa 0.5 MeV, stabilan (tj. poluraspad veci od 1026 godina)
proton: spin 1/2, masa 938 MeV, stabilan (tj. poluraspad veci od 1031 do 1033 godina)
neutron: spin 1/2, masa 939 MeV, poluraspad 886 sekundi (verovali ili ne, neutron je nestabilan :))
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz

ikalo

znaci puno je malecno...

da probam sa neutrino


mmilan

ne znam odgovor, ali neutrino ne moze da bude:

elektronski neutrino - masa manja od 0.3 eV
mionski i tau neutrini - masa manja od 0.19, tj 18.2 MeV
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz

r2d2

e Drago Dragovic opisujuci cestice ovako kaze:
Neutrino 1/2 masa  manje od 0.0001 MeV
elektron  1/2 masa 0.5110
Muon     1/2 masa 105.66
Tau        1/2 masa 1.777
-----------------------------------
E sada ti Milane presudi

mmilan

Pre svega - Tau ima masu od 1.777,00 MeV a Muon od 105,66 MeV (tau je mnogo masivniji). Jel ovo na sajtu ili u casopisu?

Neutrino je jedini moguci kandidat za odgovor, pa mozemo da priznamo. A tebi pamtim ovo kao -0.25 poena :)

Rezultat:

TomaB - 2
sale11472 - 1
r2d2 - 1
ikalo - 1
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz

r2d2

Hm, dobro , Podaci su iz njegove knjige "molim te objasni mi" str 121. ili gresis ili je stamparska greska.  ;)
Ajmo dalje.....

mmilan

Hehehe, podaci su iz Particle Data Group (PDG) 2002, 2006 godina nema greske  (http://pdg.lbl.gov) :)

Cekamo novo pitanje...
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz

r2d2

Nisam ni sumnjao da znas..  8) Ajmo dalje.....

ikalo

E da vidimo..

Na osnovu čijih posmatračkih podataka je Johan Kepler izveo svoje zakone kretanja planeta?

AshPiranha

Hahahhaah evo odgovorio sam u "Tajanstvena licnost"..  ;D ;D ;D ;D

mmilan

Najoriginalniji odgovor ;D
http://www.svetnauke.org/
Great people talk about ideas, average people talk about things, and small people talk about wine - Fran Lebowitz