Multiple Choice
What happens when a particle of matter meets its corresponding antiparticle of antimatter?
A) The combined mass of the two particles is completely transformed into energy (photons) .
B) They can form a complete atom.
C) They fuse to make a heavier particle.
D) The question makes no sense, since antimatter does not really exist.
Correct Answer:

Verified
Correct Answer:
Verified
Q10: In the cosmic timeline for the universe
Q57: Recent measurements of the temperature fluctuations in
Q86: What was the significance of the end
Q89: How does the idea of inflation account
Q90: Approximately how long did the nucleosynthesis era
Q92: Refer to this scenario for the following
Q93: Which of the following hypothetical observations, if
Q94: Why do we expect the cosmic background
Q95: Consider the data points together with the
Q96: A "GUT" (grand unified theory) refers to