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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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