Multiple Choice
The standard model of particle physics is incomplete because it leaves which question(s) unanswered?
A) Why do neutrinos have mass?
B) Why is the strong nuclear force much stronger than the weak nuclear force?
C) How is gravity related to the other three fundamental forces?
D) How does gravity work over such long distances?
E) all of the above
Correct Answer:

Verified
Correct Answer:
Verified
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