Question

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Answer 1

Hii

you are welcome in my ans

since

No = 8000

T1/2 = 3s

so

lamda = 0.6931/3 = 0.231s^-1

2) Tav = 1/ lamda = 1/0.231 = 4.33s

N = 1000

(N/No) = (1/2)^n

n = 3

t1 = 3*3 = 9s

(dn/dt)= lamda * N = 0.231 *1000=231s^-1

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