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Verified answer
FISIKA INTI• radioaktivitas
mₜ = ___?
mₒ = 120 gr
T = 4 tahun
t = 16 tahun
mₜ = mₒ • (½)^(t/T)
mₜ = 120 • (½)^(16/4)
mₜ = 120 • (½)⁴
mₜ = 120/16 = 7,5 gr ✔️