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Physics
Modern Physics — Test
Question 22
22
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Modern Physics — Test
Question 22 • Physics
Which best describes Kathy’s error?
Answer
A
Nebulae formed around 10 to the 9th power y after hydrogen and helium formed.
B
Protons formed first, then neutrons formed at 100 s .
C
Quarks and electrons formed at 10 to the negative 35 power s , not 10 to the negative 10 power s .
D
Hydrogen and helium were created at 3000 s , before nebulae formed.
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