Mathematical and Physical Journal
for High Schools
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Problem P. 3812. (May 2005)

P. 3812. A positron collides into an electron of negligible velocity. The velocities of the two photons created in the pair annihilation are perpendicular to each other. What was the velocity of the positron at the least?

(4 pont)

Deadline expired on June 13, 2005.


Statistics:

44 students sent a solution.
4 points:Almási 270 Gábor, Buday Péter, Csire Gábor, Dajka Attila Norbert, Darázs Zoltán, Domonkos Tamás, Dudás János, Enczel Dávid, Filep Tamás, Filus Tamás, Gyenis András, Hagymási Imre, Hidasi Balázs, Hlatky Dávid, Kónya 495 Gábor, Lantos Judit, Lapis Leonárd, Matulik Gábor, Molnár 811 Kristóf, Nagy 317 Péter, Nagy 555 Zoltán, Nyíri Dávid Ákos, Pásztor 001 Attila, Paulin Roland, Pósa László, Sajtos László, Strenner Balázs, Széchenyi Gábor, Szentandrási István, Szolnoki Lénárd, Takátsy Balázs, Werner Miklós.
1 point:6 students.
0 point:6 students.

Problems in Physics of KöMaL, May 2005