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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

The temperature of a liquid drops from 365 K to 361 K in 2 minutes. The time during which the temperature of the liquid drops from 344 K to 342 K is (temperature of the room is 293 K):

Options:

Answer:

Solution:

First: $\frac{4}{120} = k (363 - 293)$ , so $k = \frac{1}{2100}$ . Second: $\frac{2}{t} = k (343 - 293)$ , so $t = \frac{2 \times 2100}{50} = 84$ s. A.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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