Physics

Physics

Problem

A cup of tea is initially at

75^{\circ}\text{C}

and is left to cool in a room kept at

25^{\circ}\text{C}

. The cooling follows a model with constant

k=0.1\;\text{min}^{-1}

. Calculate its temperature after

5

minutes (answer in

^{\circ}\text{C}

, correct to one decimal place).

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