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mujhe koi problem nhi h xd
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Exponentail Decay. The amount of radioactive material present at time t is given by A = A0ekt, where A0 is the initial amount, k<0 is the rate of decay. Radioactive substances are more commonly described in terms of their half-life or the time required for half of the substance to decompose. Determine the half-life of substance X if after 600 years, a sample has decayed to 85% of its original mass?
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