3. What percent of Carbon -14 would be left after 5730 years?

0.79% is left after 40,000 years. Explanation: The radioactive decay of an element can be modeled as an exponential decay.

Explanation:

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the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this