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Ket [755]
4 years ago
10

A thallium source with a half-life of 3.7 years was certified at 10 kBq 10 years ago. What is its activity now?

Physics
1 answer:
Murrr4er [49]4 years ago
7 0

Answer:

the activity of thallium is 1.54 kBq .

Explanation:

given,

half life = 3.7 years

R₀ = 10  kBq                    

time = 10 years                    

R = R_0\times e^(\dfrac{-0.693}{t_{1/2}}\times t)

R = 10\times e^(\dfrac{-0.693}{3.7}\times 10)

R = 10 × (0.153667)                      

R = 1.5367 ≈ 1.54 kBq                

hence, the activity of thallium is 1.54 kBq .

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