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
Question 3 (4 points) A positron has the same charge as an electron, just a different...
If the half-life, 11/2, of 90 Sr is 9.09 x 108s, it would take 3.64 x 10's of time to transpire in order for 90 Sr to drop to 16th of its original amount. True False
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**Please base question 3 on the picture above.
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