Mathematical and Physical Journal
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Problem P. 3863. (January 2006)

P. 3863. Photons collide with electrons of negligible speed. The energy of the photons is equal to the rest energy of the electrons. After the collision one of the electrons moves such that the angle between the original velocity of the photon and the velocity of the electron is 45o. Find the speed of this electron.

(5 pont)

Deadline expired on February 13, 2006.


Statistics:

43 students sent a solution.
5 points:Almási 270 Gábor András, Blastik Zsófia, Bogár 560 Péter, Csire Gábor, Dudás János, Enczel Dávid, Engedy Balázs, Győri Tamás Noé, Hegyi Ádám, Hlatky Dávid, K. Gergely, Károlyi Márton, Konczer József, Kónya 495 Gábor, Kovács 137 Judit, Lovas Lia Izabella, Matulik Gábor, Megyeri Balázs, Molnár 811 Kristóf, Nagy 224 Csaba, Nagy 317 Péter, Nyíri Dávid Ákos, Pálovics Róbert, Pásztor Attila, Pósa László, Szaller Dávid, Széchenyi Gábor, Szük Dániel, Takátsy Balázs, Tűri Balázs, Varga Bonbien, Werner Miklós.
4 points:Kocsis Vilmos, Nagy 555 Zoltán, Peregi Tamás, Szabó 001 Áron.
3 points:4 students.
2 points:3 students.

Problems in Physics of KöMaL, January 2006