2025 TKSS PRELIMS P2 Q1

2025 TKSS PRELIMS P2 Q1

Secondary 4
4 marks
2025 Tanjong Katong Secondary School Prelims A Math Paper 2

In an experiment, it was observed that the number of bacteria in a culture doubles every 4 hours. It is given that \(N_0\) is the number of bacteria present at the start of the experiment, and \(N\) is the number of bacteria \(t\) hours later. Calculate the exact value of the constant \(k\), given that \(N = N_0 e^{kt}\).[4]

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Answer:\(k=\dfrac{\ln 2}{4}\).

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