Physics

Physics

Problem

A radioactive isotope has a half-life of 28 years. What is its decay constant λ\lambda (in year−1\text{year}^{-1})? (Take ln⁡2=0.693\ln 2 = 0.693.) a) 0.03570.0357 b) 0.02480.0248 c) 0.02770.0277 d) 0.01080.0108

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