Newton's Law of Cooling

To do an experimental verification of Newton’s law of cooling, we need to take the ‘temperature’ vs ‘time’ readings, of a hot body, kept in given surroundings. An appropriate choice, of the ‘hot body’ and the ‘surroundings' would then be

Initially, the rate of coaling is higher and decreases as the temperature falls.

The quantity of heat required to heat $1$ mole of a mono atomic gas through one degree $\mathrm{K}$ at constant pressure is:

A brass boiler has a base area $0.15{\mathrm{m}}^2$ and thickness $1.0\mathrm{cm}.$ It boils water at the rate of $6.0\mathrm{kg}/\min$ when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boiler. Thermal conductivity of brass:

A body cools from $80°\mathrm{C}$ to $50°\mathrm{C}$ In 5 minutes. Calculate the time it takes to cool from $60°\mathrm{C}$ to $30°\mathrm{C}$. The temperature of the surroundings is $20°\mathrm{C}$.

It is a valid _____ in the transfer of heat from a radiator to a room, the loss of heat through the wall of a room.

Where k is a positive constant depending upon the area and nature of the surface of the body . 

Certain quantity of water cools from $70 °\mathrm{C}$ to $60 °\mathrm{C}$ in the first 5 minutes and to $54 °\mathrm{C}$ in the next 5 minutes. The temperature of the surroundings is ;

A body cools down from $80 °\mathrm{C}$ to $60 °\mathrm{C}$  in 10 minutes when the temperature of surrounding is $30 °\mathrm{C}$. The temperature of the body after next 10 minutes will be:

The set-up consists of double walled vessel (V) containing water in between the two walls.

Two thermometers through the cork are used to not the temperatures T₂ of water in _____ and T₁ of hot water in between the double walls respectively. 

A pan filled with hot food cools for ${94}^{ }°\mathrm{C}$ to $86 °\mathrm{C}$ in $2$ Minutes when the room temperature is at $20 °\mathrm{C}$. How long will it take to cool from $71 °\mathrm{C}$ to $69 °\mathrm{C}$ ?

A body cools from $60°\mathrm{C}$ to $52°\mathrm{C}$ in $10$ minutes and to $46°\mathrm{C}$ in the next $10$ minutes, Find the temperature of surrounding.

A hot metal sphere cools from $60°\mathrm{C}$ to $52°\mathrm{C}$ in $5$ minutes and from $52°\mathrm{C}$ to $44°\mathrm{C}$ in next $7.5$ minutes. Determine its temperature in the next $10$ minutes.

State:

Newton's Law of cooling

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