I know that protons and neutrons are located at the center of an atom, so the correct answer is D
This question is probably referring to heat energy transferring from the car to its surroundings.
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➷ After 10,000 years the mass will be:
1,000 / 2 = 500
After 20,000 years the mass will be:
500/2 = 250
As you can see, the correct answer would be A. 20,000 years
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