The most precise scientific standard of length is based on
A) a specified fraction of the distance from the pole to the equator on Earth.
B) the distance separating two marks on a bar carefully kept at special conditions.
C) a property of a particular kind of atom.
D) the diameter of our Galaxy.
E) the speed of light in a vacuum.
Correct Answer:
Verified
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Q20: Which mass is the largest?
A) 0.0231
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