Question: state how many polonium-218 atoms Jonathon has after:
4min:
14min:
9min:
19min:
Second question (if you want to answer it would really help me)
Question: Determine the time(min) when Jonathon has:
A) one-half of the original number of polonium-218 atoms
B) one-quarter of the original number of polonium-218 atoms
C) one-eighth of the original number of polonium-218 atoms
Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w. to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w. best answer is a) . work reqd is prop to velocity squared.
Answer from: Quest
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