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Which isotope is appropriate for dating rocks that are billions of years old A. carbon-12 B. carbon-14 C. uranium-238 D. oxygen-16
asked
Feb 6, 2018
Chemistry
high-school
2
answers
0
votes
127k
views
A space probe is launched from Earth headed for deep space. At a distance of 10,000 miles from Earth's center, the gravitational force on it is 600lb. What is the size of the force when it is at each of
asked
Nov 2, 2017
Physics
high-school
1
answer
2
votes
32.8k
views
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