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1 Dec 2021
Given information
Given that an electron and a positron, each with 420 keV of kinetic energy, annihilate in a head-on collision and produce two photons. We are asked to find the wavelength of those photons.
Step-by-step explanation
Step 1.
The two photons produced will have a total momentum equal to zero, as the total momentum of the electron-positron pair is equal to zero. So, we can say that the total energy of the electron-positron pair is equal to that of the photons.
ie; 
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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922
Solutions
Chapter
Section
- Problem 1
- Problem 2
- Problem 3
- Problem 4
- Problem 5
- Problem 5b
- Problem 6a
- Problem 6b
- Problem 7
- Problem 8
- Problem 9
- Problem 10a
- Problem 10b
- Problem 10c
- Problem 10d
- Problem 10e
- Problem 11
- Problem 12
- Problem 13
- Problem 14
- Problem 15
- Problem 16
- Problem 17
- Problem 18
- Problem 19
- Problem 20a
- Problem 20b
- Problem 20c
- Problem 21
- Problem 22a
- Problem 22b
- Problem 22c
- Problem 22d
- Problem 22e
- Problem 22f
- Problem 23
- Problem 24
- Problem 25a
- Problem 25b
- Problem 26
- Problem 27
- Problem 28
- Problem 29
- Problem 30a
- Problem 30b
- Problem 31a
- Problem 31b
- Problem 32a
- Problem 32b
- Problem 32c
- Problem 33
- Problem 34a
- Problem 34b
- Problem 35a
- Problem 35b
- Problem 35c
- Problem 35d
- Problem 36a
- Problem 36b
- Problem 36c
- Problem 36d
- Problem 36e
- Problem 37
- Problem 38
- Problem 39
- Problem 40