[DOC] [TLE] Free Flashcards about PHYSICS - StudyStack [PAR] IF YOU WHIP UP A FRESH BATCH OF THORIUM-232 TODAY, IN 14 BILLION 
YEARS THIS PORTION OF ITS ATOMS WILL HAVE DECAYED, HALF. [DOC] [TLE] If the universe was created 14 billion years ago how do we see ... [PAR] We don't, and we do. The ambiguity is in the meaning of now. For an object 
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uranium. [DOC] [TLE] When 14 Billion Years Just Isn't Enough Time - Scientific American [PAR] Mar 1, 2012 ... Some say its glory days are long gone, but the universe has life in it yet. ... will 
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Question: If you whip up a fresh batch of thorium-232 today, in 14 billion years this portion of its atoms will have decayed
Answer: half