Advertisements
Advertisements
प्रश्न
A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find heat energy needed to warm it by 15°C.
उत्तर
We know that heat energy needed to raise the temperature by 15° is = heat capacity × change in temperature.
Heat energy required = 966 × 15 = 14490 J
APPEARS IN
संबंधित प्रश्न
How is the transference of heat energy by radiation prevented in a calorimeter?
What is the principle of Calorimetry?
How can a temperature in degree Celsius be converted into S.I. unit of temperature?
The melting point of naphthalene, a crystalline solid is 80℃ and the room temperature is 30℃. A sample of liquid naphthalene at 100℃ is cooled down to the room temperature. Draw a temperature time graph to represent this cooling.
40 g of ice at -16°C is dropped into water at 0°C, when 4 g of water freezes into ice. If specific heat capacity of ice is 2100 J/kg°C, what will be the latent heat of fusion of ice?
Calculate the time taken by an immersion heater, which supplies energy at the rate of 7000 J/minute to raise temp. of 5 kg water from 22°C to 47°C.
Name two factors on which the heat energy librated by a body on cooling depends.
With the help of a neat diagram, explain the working of a calorimeter.
Name the material used for making a Calorimeter.
