Multiple Choice
The Coulomb's force between a proton and an electron is 2.27 × 1039 times greater than the gravitational force. If the two forces were equal, what should the size of the elementary charge be?
A) 1.60 × 10-19 C
B) 3.36 × 10-39 C
C) 1.23 × 10-77 C
D) 2.27 × 10-39 C
E) 4.41 × 10-40 C
Correct Answer:
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