http://www.hotnews.ro HotNews.ro - revista presei, stiri, ziare, TV, radio, documente, download, video ro Wed Feb 15 05:15:39 EET 2012 Wed Feb 15 05:15:39 EET 2012 i � Copyright Asociatia Editorilor de Presa Online 2005 30 207 44 http://www.hotnews.ro http://www.hotnews.ro/rss/hotnews.gif http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2862911 cu embolia cum ramane?.... 2008-04-22 19:50:03.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2862911 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2833047 Toate articolele sunt unul singur tradus si rastradus in toate limbile lumii inclusiv romana. Unele contin si minciuna cum ca NASA a fost deacord cu corectia, altele nu. 2008-04-18 08:55:53.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2833047 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2832678 http://www.nasa.gov/centers/jpl/news/asteroid-20080416.html 2008-Apr-16: In response to inquiries, accidental impact with an artifical satellite in 2029 is vanishingly unlikely. As mentioned above, (1) Apophis does not pass near the zones where most satellites are located and (2) man-made satellites and Apophis both have small cross-sectional areas. Even if a high-velocity impact occurred, a large satellite could change Apophis' position 7 years later (in 2036) by only 100's of km at most. This is less than 1/10th the size of the smallest issues considered in the paper, very much in the noise of the calculations, and can have no meaningful effect on Earth impact probability estimation (which already incorporates more than 30 million km of uncertainty). At such a late date, impact with an artificial satellite would be like a bug on the windshield of Apophis. Deflection efforts are dependent on being early enough to leverage the dynamics of the 2029 encounter. Events during the encounter lack such leverage. http://neo.jpl.nasa.gov/apophis/ 2008-04-18 07:11:55.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2832678 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2831013 dar daca am dizolva NASA si am pune in locul ei o clasa de elevi dinastia? Mi se pare absolut exceptional. Cum de am fost atat de prosti pana acum si nu ne-am dat seama? Spuneti-le domnilor la americani sa lase prostiile si sa angajeze elevi de 13 ani sa aibe si presa un os de ros vre-o 2-3 zile. 2008-04-17 19:27:09.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2831013 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2829710 textul de mai sus n-a fost intentionat ca raspuns. 2008-04-17 16:45:35.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2829710 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2828999 sa va culturalizati conform metodei Bigmac? Cu diplome de la McNeznaiu? Pe vremuri nu existau discutii: 1 x 10³ = mie 1 x 10^6 = milion 1 x 10^9 = miliard 1 x 10^12 = bilion 1 x 10^15 = biliard si asa in continuare: trilion, triliard, cvatrilion, cvatriliard... Valabil si in patria copilului-minune, care poate le-a incurcat cu etaloanele americane si engleze (inch, foot, yard, mile). I se confera de-acum diploma plus medalia Mac...? 2008-04-17 15:55:26.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2828999 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2828532 "La Nasa et Nico Marquardt estiment qu'en cas de collision, la boule de fer et d'iridium d'un diamčtre de 320 mčtres et lourd de 200 milliards de tonnes tomberait dans l'Océan Atlantique". - AFP Oare si aici se ridica problema de "franceza americana sau franceza britanica"????? 2008-04-17 15:32:17.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2828532 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827918 Nu, i se amesteca gandurile si confunda NASA cu caminu cultural ceea ce s-a si intamplat. Era o ironile...milky... 2008-04-17 14:45:28.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827918 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827319 billion = miliard million = milion 2008-04-17 13:27:11.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827319 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827313 Daca ar afla tiganii ce valoare au satelitii aia. Sunt curios daca le dispar satelitii astora de la NASA pe cine or sa arunce vina ...pe romani? 2008-04-17 13:23:25.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827313 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827177 Vedeti wikipedia - billion. Este ori 10^9 (miliard), ori 10^12 (o mie de miliarde). Nici intr-un caz milion. 2008-04-17 12:59:43.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827177 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827066 La fiecare lansare de rachete au ramas in spatiu mai mult de un singur obiect. La o racheta clasica sunt cele 3 trepte din care prima cade la sol, raman ultimele doua trepte si conul de protectie pt satelit care este facut la randul lui din 2 sau chiar 3 bucati si mai sunt si micile motoare ale satelitului pt pozitionarea finala pe orbita. Par putine initial, dar se strang in timp o gramada de "gunoaie spatiale", mai ales ca in afara misiunilor oficiale civile mai erau si o gramada de misiuni militare cu sateliti spion care initial trimiteau capsule cu filme la sol si nu avea mai mult de 5-6 role de film. In perioada razboiului rece din anii 70 se lansa uneori la fiecare 2 saptamani alta racheta. 2008-04-17 12:47:26.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2827066 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826930 dude, fierul are 7,68 To / metru cub.. refa calculele 2008-04-17 12:36:42.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826930 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826872 bil·lion [bíllyən] (plural bil·lions or bil·lion) noun 1. one thousand million: one thousand million, written as 1 followed by nine zeros 2. U.K. one million million: one million million, written as 1 followed by 12 zeros (dated) 3. large number: an extremely large but unspecified number of people or things (informal) (often pl) 4. billion in money: a billion dollars Microsoft® Encarta® 2007. © 1993-2006 Microsoft Corporation. All rights reserved. 2008-04-17 12:21:48.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826872 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826747 40.000 de sateliti inseamna ca de la Sputnik (1957) s-au lansat 2,14 pe zi. Probabil i-au lansat cu Katiushele... 2008-04-17 12:06:30.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826747 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826164 pai, daca nu sunteti in tema de ce postati comentarii? cum adica embolie cervicala? embolul este ceva ce obstrueaza un vas de sange (picatura de grasime, paraziti, bula de aer, tromb)... deci daca are loc intr-un vas de sange, cum poti sa zici ca e cervicala (regiune)? poate zona ta cervicala e o mare bula de aer! cat despre elevul german, spectaculos, n-am ce zice, dar cititi macar toate articolele despre caz. 2008-04-17 10:23:23.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826164 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826163 sucirea gatului? 2008-04-17 10:23:19.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826163 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826010 deja is 4 numai la masa .... cate o mai fi la probabilitate 2008-04-17 09:30:35.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2826010 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825927 Pentru cei care se lovesc de greutatea asteroidului să spunem că în engleza americană billion= million din engleza britanică... Deci nu are 25 de miliarde ci de milioane de tone... 2008-04-17 09:13:20.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825927 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825905 billion=million 2008-04-17 09:03:40.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825905 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825872 atentie la unitati de masura, la americani billion inseamna milion iar la englezi inseamna miliard si tot invers este si pentru milion.....deci depinde daca textul este scris in engleza britanica sau cea americana 2008-04-17 08:50:09.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825872 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825181 volumul de praf dizlocat de impact va fi de 200 de miliarde de tone,nu greutatea asteroidului<br>densitatea unui asteroid nu trece de 4 g/cm3 ,dar viteza lui e de 40 km/sec<br>si impulsul=viteza*masa,ma savantule!<br>asa ca nu conteaza cat e de mare,ci conteaza viteza<br>si nici unghiul de intrare nu conteaza,pt ca forta gravitationala oricum il deviaza ,impreuna cu frictiunea atmosferica,NASA boiY 2008-04-17 04:23:36.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2825181 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824984 atunci mai trebuie adaugata o inexactitate: masa se masoara in Kilograme iar greutatea care este o forta se masoara in newtoni. Pe siteul Nasa este clar precizat masa = 21 milioane tone 2008-04-17 01:23:09.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824984 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824961 din pacate nu mai am 13 ani asa ca NASA nu o sa ma ia in seama :)) Si pana una alta, daca facem o bibliografie aprofundata, pe siteul NASA de exemplu sau wikipedia http://neo.jpl.nasa.gov/risk/a99942.html http://fr.wikipedia.org/wiki/(99942)_Apophis vedem ca de fapt masa asteroidului este de fapt de 2.1x10**10Kg adica 21 milioane tone. Oricum problema nu este asta (desi diferenta este semnificativa) ci faptul ca o mica cercetare bibliografica si compararea cu sursele originale ar evita anumite erori datorate citarii citarii citarii .... Precizez ca HotNews este si o sa ramana sursa mea principala de informare si observatiile pe care le-am facut mai sus au fost facute din cea mai buna intentie. 2008-04-17 01:09:11.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824961 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824959 Amice, mai usor cu intrebarile retorice ca faci embolie cervicala. 2008-04-17 01:06:38.0 http://www.hotnews.ro/stiri-international-2820198-calculele-nasa-corectate-elev-german-13-ani.htm#comentariu_2824959