To determine a half-life, a student plots ln|dN/dt| versus time t. The graph shown is obtained. Find the half-life in years. Image
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To determine a half-life, a student plots ln|dN/dt| versus time t. The graph shown is obtained. Find the half-life in years. Image

G1 Physics · Accepted Answer

Step 1: Use N(t) = N₀ exp(−λt), A = λN and T₁/₂ = ln2/λ. Step 2: For two samples, write the decay law separately and equate the required activities/numbers. Final: B: 8 years.