The mass, m grams, of a radioactive substance is given by the formula m m 0 e kt , where t is the time in days after the mass was first recorded and m 0 and k are constants The table below shows experimental values of t and m a Draw the graph of ln m against t b Use your graph to estimate the value...

a The graph of ln m against t would be a straight line As t increases the ...

The mass, m grams, of a radioactive substance is given by the formula m = m 0

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The mass, m grams, of a radioactive substance is given by the formula m = m₀ e^-kt, where t is the time in days after the mass was first recorded and m₀ and k are constants.

The table below shows experimental values of t and m.

a. Draw the graph of ln m against t.

b. Use your graph to estimate the value of m₀ and k.

c. Estimate the value of m when t = 27.

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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The mass, m grams, of a radioactive substance is given by the formula m = m 0

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10 20 30 40 50 m 40.9 33.5 27.4 22.5 18.4

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

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