Answers Physics Modern Physics — TestQuestion 22

22

QuizMultiple Choice

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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