Conceptual Challenge Problems
These rigorous, thought-provoking problems integrate conceptual learning with problem solving and are suitable for group work.
CP2.B (Section 2.3) The age of the universe is unknown, but some conclude from measuring Hubble’s constant that it is about 18 billion years old, which is about four times the age of Earth. If so, what is the age of the universe in seconds? If you had a sample of carbon with the same number of carbon atoms as there have been seconds since the universe began, could you measure this sample on a laboratory balance that can detect masses as small as 0.1 mg?
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