The correct answer is B because isotopes have different numbers of neutrons, and neutrons are located in the nucleus
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When she starts out, he is (40x2.5)= 100 miles ahead of her.
She gains (65-40)= 25 miles on him every hour.
It takes her (100/25)= 4 hours to catch up to him.
Answer:
I believe it is C. Their Temps.
Explanation:
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Answer: A flower pot falling
Explanation: