Homework Answers
3)
Electron has -1 charge
Positron has +1 charge.
They do not have same charge
Answer: Fals3
4)
After n half lives,
N/No = (1/2)^n
1/16 = (1/2)^n
(1/2)^4 = (1/2)^n
n = 4
It takes 4 half lives.
Time taken = 4*half life
= 4*9.09*10^8 s
= 3.64*10^9 s
Answer: False
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