Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem P. 4083. (May 2008)

P. 4083. A 1400 year-old carbonized tree is used as sample for radiocarbon dating. The sample is contaminated by coal which does not contain radioactive carbon isotope. Will the physicist, who carries out the measurement and does not know that the sample is contaminated, find the sample older or younger than it really is? How old will the sample be determined by the physicist if it contains 30% non-radioactive coal?

(5 pont)

Deadline expired on June 11, 2008.


Statistics:

47 students sent a solution.
5 points:Almási 270 Gábor András, Balogh Gábor, Blázsik Zoltán, Csató Bertalan, Deák Zsolt, Deli Gábor, Englert Dávid, Filep Tibor, Fonyó Dávid, Földes Imre, Gál Bálint, Hartstein Máté, Hegyi Ádám, Jakab Dávid, Kovács 888 Gábor, Kovács Benjámin, Krämer Zsolt, Lajtai Gergő, Lászlóffy András, Lovas Lia Izabella, Lőrincz Dóra, Maknics András, Marák Károly, Máté Márta, Nagy 648 Donát, Najbauer Eszter Éva, Papp Ádám, Pázmán Koppány, Piller Éva, Somogyi József, Szikszay László, Szolnoki Lénárd, Tolner Ferenc, Tóth 123 László, Varga 777 Ádám, Velicsányi Péter, Vőfély Róza Villő.
4 points:Hlatky Dávid.
1 point:9 students.

Problems in Physics of KöMaL, May 2008