In 5 minutes, a body cools from 75$^\circ$C to 65$^\circ$C at room temperature of 25$^\circ$C. The temperature of body at the end of next 5 minutes is _________$^\circ$ C.
Answer (integer)
57
Solution
${{75 - 65} \over 5} = k\left( {{{75 + 65} \over 2} - 25} \right)$<br><br>$\Rightarrow k = {2 \over {45}}$<br><br>${{65 - T} \over 5} = k\left( {{{65 + T} \over 2} - 25} \right)$<br><br>$\Rightarrow T = 57^\circ$ C
About this question
Subject: Physics · Chapter: Properties of Solids and Liquids · Topic: Elasticity
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