The half-life of an element is 200 years. if a 30 gram sample was originally deposited, how much is left after 200 years? question 2 options: 10 grams 15 grams 30 grams 60 grams pls i need an a

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for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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