Question
The temperature of a room heated by a heater is $20^{\circ} \mathrm{C}$ ' when outside temperature is $-20^{\circ} \mathrm{C}$ and it is $10^{\circ} \mathrm{C}$ ' when the outside temperature is $-40^{\circ} \mathrm{C} .$ What is the temperature of the heater?
Step 1
We know that the heat given by the heater will be equal to the heat lost out of the room. So, we can write this as: \[T_H - T_R = \alpha (T_R - T_S)\] where $\alpha$ is the specific heat of the room. Show more…
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It is known thal temperature in a room is $+20^{\circ} \mathrm{C}$ when out-door temperaturo is $-20^{\circ} \mathrm{C}$ and when room is at $+10^{\circ} \mathrm{C}$, outdoor temperature is $-40{ }^{\circ} \mathrm{C}$. Delermine the temperature $T$ of radiator heating the room. (a) $40^{\circ} \mathrm{C}$. (b) $50^{\circ} \mathrm{C}$ (c) $60^{\circ} \mathrm{C}$ (d) $70^{\circ} \mathrm{C}$
Thermometry and Thermodynamics
Section B
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