366639 A body cools from \(80^\circ C\) to \(50^\circ C\) in \(5\;\min \). Calculate the time it takes to cool from \(60^\circ C\) to \(30^\circ C\). The temperature of the surroundings is \(20^\circ C\).

366640 A body cools from \(80^\circ C\) to \(60^\circ C\) in \(10 \mathrm{~min}\), when the temperature of surroundings is \(30^\circ C\). The temperature of the body after next \(10\;\min \) will be

366641 Two friends \(A\) and \(B\) are waiting for another friend for tea. \(A\) took the tea in a cup and mixed the cold milk and then waits. \(B\) took the tea in the cup and then mixed the cold milk when the friend comes. Then, the tea will be hotter in the cup of

366642 The room temperature is \( + 20^\circ C\) when outside temperature is \(- 20^\circ C\) and room temperature is \( + 10^\circ C\) when outside temperature is \( - 40^\circ C\). Find the temperature of the heater heating the room.

366643 A system \(S\) receives heat continuously from an electrical heater of power \(10\;W\). The temperature of \(S\) becomes constant at \(50^\circ C\) when the surrounding temperature is \(20^\circ C\). After the heater is switched off, \(S\) cools from \(35.1^\circ C\) to \(34.9^\circ C\) in 1 minute. The heat capacity of \(S\) is

366639 A body cools from \(80^\circ C\) to \(50^\circ C\) in \(5\;\min \). Calculate the time it takes to cool from \(60^\circ C\) to \(30^\circ C\). The temperature of the surroundings is \(20^\circ C\).

366640 A body cools from \(80^\circ C\) to \(60^\circ C\) in \(10 \mathrm{~min}\), when the temperature of surroundings is \(30^\circ C\). The temperature of the body after next \(10\;\min \) will be

366641 Two friends \(A\) and \(B\) are waiting for another friend for tea. \(A\) took the tea in a cup and mixed the cold milk and then waits. \(B\) took the tea in the cup and then mixed the cold milk when the friend comes. Then, the tea will be hotter in the cup of

366642 The room temperature is \( + 20^\circ C\) when outside temperature is \(- 20^\circ C\) and room temperature is \( + 10^\circ C\) when outside temperature is \( - 40^\circ C\). Find the temperature of the heater heating the room.

366643 A system \(S\) receives heat continuously from an electrical heater of power \(10\;W\). The temperature of \(S\) becomes constant at \(50^\circ C\) when the surrounding temperature is \(20^\circ C\). After the heater is switched off, \(S\) cools from \(35.1^\circ C\) to \(34.9^\circ C\) in 1 minute. The heat capacity of \(S\) is

366639 A body cools from \(80^\circ C\) to \(50^\circ C\) in \(5\;\min \). Calculate the time it takes to cool from \(60^\circ C\) to \(30^\circ C\). The temperature of the surroundings is \(20^\circ C\).

366640 A body cools from \(80^\circ C\) to \(60^\circ C\) in \(10 \mathrm{~min}\), when the temperature of surroundings is \(30^\circ C\). The temperature of the body after next \(10\;\min \) will be

366641 Two friends \(A\) and \(B\) are waiting for another friend for tea. \(A\) took the tea in a cup and mixed the cold milk and then waits. \(B\) took the tea in the cup and then mixed the cold milk when the friend comes. Then, the tea will be hotter in the cup of

366642 The room temperature is \( + 20^\circ C\) when outside temperature is \(- 20^\circ C\) and room temperature is \( + 10^\circ C\) when outside temperature is \( - 40^\circ C\). Find the temperature of the heater heating the room.

366643 A system \(S\) receives heat continuously from an electrical heater of power \(10\;W\). The temperature of \(S\) becomes constant at \(50^\circ C\) when the surrounding temperature is \(20^\circ C\). After the heater is switched off, \(S\) cools from \(35.1^\circ C\) to \(34.9^\circ C\) in 1 minute. The heat capacity of \(S\) is

366639 A body cools from \(80^\circ C\) to \(50^\circ C\) in \(5\;\min \). Calculate the time it takes to cool from \(60^\circ C\) to \(30^\circ C\). The temperature of the surroundings is \(20^\circ C\).

366640 A body cools from \(80^\circ C\) to \(60^\circ C\) in \(10 \mathrm{~min}\), when the temperature of surroundings is \(30^\circ C\). The temperature of the body after next \(10\;\min \) will be

366641 Two friends \(A\) and \(B\) are waiting for another friend for tea. \(A\) took the tea in a cup and mixed the cold milk and then waits. \(B\) took the tea in the cup and then mixed the cold milk when the friend comes. Then, the tea will be hotter in the cup of

366642 The room temperature is \( + 20^\circ C\) when outside temperature is \(- 20^\circ C\) and room temperature is \( + 10^\circ C\) when outside temperature is \( - 40^\circ C\). Find the temperature of the heater heating the room.

366643 A system \(S\) receives heat continuously from an electrical heater of power \(10\;W\). The temperature of \(S\) becomes constant at \(50^\circ C\) when the surrounding temperature is \(20^\circ C\). After the heater is switched off, \(S\) cools from \(35.1^\circ C\) to \(34.9^\circ C\) in 1 minute. The heat capacity of \(S\) is

366639 A body cools from \(80^\circ C\) to \(50^\circ C\) in \(5\;\min \). Calculate the time it takes to cool from \(60^\circ C\) to \(30^\circ C\). The temperature of the surroundings is \(20^\circ C\).

366640 A body cools from \(80^\circ C\) to \(60^\circ C\) in \(10 \mathrm{~min}\), when the temperature of surroundings is \(30^\circ C\). The temperature of the body after next \(10\;\min \) will be

366641 Two friends \(A\) and \(B\) are waiting for another friend for tea. \(A\) took the tea in a cup and mixed the cold milk and then waits. \(B\) took the tea in the cup and then mixed the cold milk when the friend comes. Then, the tea will be hotter in the cup of

366642 The room temperature is \( + 20^\circ C\) when outside temperature is \(- 20^\circ C\) and room temperature is \( + 10^\circ C\) when outside temperature is \( - 40^\circ C\). Find the temperature of the heater heating the room.

366643 A system \(S\) receives heat continuously from an electrical heater of power \(10\;W\). The temperature of \(S\) becomes constant at \(50^\circ C\) when the surrounding temperature is \(20^\circ C\). After the heater is switched off, \(S\) cools from \(35.1^\circ C\) to \(34.9^\circ C\) in 1 minute. The heat capacity of \(S\) is