In a room at 2 5 ∘ C water cools from 7 0 ∘ C to 6 0 ∘ C in 6 minutes. Find the time in minutes to cool from 6 0 ∘ C to 5 0 ∘ C (nearest whole number).

First: 6 10 = k ( 40 ) , so k = 24 1 . Second: t 10 = 24 1 ( 30 ) , so t = 8 minutes.

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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediuminteger

In a room at $2 5^{\circ}$ C water cools from $7 0^{\circ}$ C to $6 0^{\circ}$ C in 6 minutes. Find the time in minutes to cool from $6 0^{\circ}$ C to $5 0^{\circ}$ C (nearest whole number).

Answer:

Solution:

First: $\frac{10}{6} = k (40)$ , so $k = \frac{1}{24}$ . Second: $\frac{10}{t} = \frac{1}{24} (30)$ , so $t = 8$ minutes.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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