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FISIKA INTI
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3][ waktu paruh
T = 2 hari
t = 10 hari
Nₒ = a gram
Nₜ = __?

Nₜ = Nₒ • (½)^(t/T)
Nₜ = a • (½)^(10/2)
Nₜ = a • (½)⁵
Nₜ = ⅟₃₂ a gram ✔️


4][
T = __?
t = 25 menit
Nₒ = a gram
Nₜ = ⅟₃₂ a gram

Nₜ = Nₒ • (½)^(t/T)
⅟₃₂ a = a • (½)^(25/t)
(½)⁵ = (½)^(25/T)
5 = 25 / T
T = 25/5 = 5 menit ✔️