The temperature of a body fell from 100°c to50°c in 10 minutes. The surrounding temperature was 20°c. What is the temperature after further 10 minutes.
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Answer:
125/4°C
Explanation:
Use the formula:
ln(Tf-T•) = -Kt
Ti-T•
ln(50-20) = -K10 -(I)
100-20
ln(T-20) = -K10 -(II)
50-20
divide I and II
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