When four protons collide to form helium,what fraction of the original mass of the protons is converted to energy?
A) 20%
B) 0.7%
C) 100%
D) 4%
Correct Answer:
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Q23: The phrase "hydrostatic equilibrium" in the Sun
Q24: What is nuclear fusion?
A) A heavy nucleus
Q25: About how much longer can the Sun
Q26: What is a positron?
A) The nucleus of
Q27: Where is most of the mass of
Q29: When two protons and two neutrons combine
Q30: Approximately where is the Sun in terms
Q31: The average time taken for energy generated
Q33: The Sun's source of energy at the
Q253: Just outside the radiation zone lies the:
A)
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