1. An electron of mass m and kinetic energy equal to its mass strikes a positron at rest. They annihilate, creating two high-energy photons. One photon enters a detector placed at an angle of 90° with respect to the direction of the incident electron. What is the value of 0 of the second photon? A. 22° В. 30° C. 45° E, P. nis D. 60° E„„P. 90 EP. BEFORE AFTER
1. An electron of mass m and kinetic energy equal to its mass strikes a positron at rest. They annihilate, creating two high-energy photons. One photon enters a detector placed at an angle of 90° with respect to the direction of the incident electron. What is the value of 0 of the second photon? A. 22° В. 30° C. 45° E, P. nis D. 60° E„„P. 90 EP. BEFORE AFTER
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![1. An electron of mass m and kinetic energy equal to its mass strikes a
positron at rest. They annihilate, creating two high-energy photons. One photon enters
a detector placed at an angle of 90° with respect to the direction of the incident electron.
What is the value of 0 of the second photon?
А. 22°
EP.
В. 30°
С. 45°
E.P.
90
a
D. 60°
E. P.
BEFORE
AFTER
2. A moving radioactive particle of
mass 5m and kinetic energy T disintegrates into two par-
ticles. One of the final particles has mass m and is at
rest while the other final particle is massless and is in
the forward direction as shown in the figure. What is the
threshold/minimum kinetic energy T for this process to
BEFORE
T, 5m
AFTER
осcur?
А. бт
В. 8т
m1 = m
m2 = 0
С. 12m
D. 16m
3. A proton of mass 938 [MeV] and energy 1069 [MeV] collides with another
stationary proton. After the collision, the two protons form a composite particle with some
energy and momentum. Which of the following choices is the rest mass of the composite
particle?
A. 1002 (MeV]
В. 1372 [МeV]
C. 1416 (MeV]
D. 1940 (MeV]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a544645-1105-4111-9b63-efcac336c659%2F28ac13f0-2277-48a4-9ce9-e2e47fa38717%2Fym0dyh6_processed.png&w=3840&q=75)
Transcribed Image Text:1. An electron of mass m and kinetic energy equal to its mass strikes a
positron at rest. They annihilate, creating two high-energy photons. One photon enters
a detector placed at an angle of 90° with respect to the direction of the incident electron.
What is the value of 0 of the second photon?
А. 22°
EP.
В. 30°
С. 45°
E.P.
90
a
D. 60°
E. P.
BEFORE
AFTER
2. A moving radioactive particle of
mass 5m and kinetic energy T disintegrates into two par-
ticles. One of the final particles has mass m and is at
rest while the other final particle is massless and is in
the forward direction as shown in the figure. What is the
threshold/minimum kinetic energy T for this process to
BEFORE
T, 5m
AFTER
осcur?
А. бт
В. 8т
m1 = m
m2 = 0
С. 12m
D. 16m
3. A proton of mass 938 [MeV] and energy 1069 [MeV] collides with another
stationary proton. After the collision, the two protons form a composite particle with some
energy and momentum. Which of the following choices is the rest mass of the composite
particle?
A. 1002 (MeV]
В. 1372 [МeV]
C. 1416 (MeV]
D. 1940 (MeV]
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