Advertisements
Advertisements
प्रश्न
A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/°C. What is its specific heat capacity in S.I. units?
Advertisements
उत्तर
Specific heat capacity C' = `"Amount of heat"/("Mass" xx "Rise in temp.") = 14490/(2.0 xx 15) = 14490/30`
= 483 J/kg/°C.
संबंधित प्रश्न
In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150 °C is dropped in a copper calorimeter (of water equivalent 0.025 kg) containing 150 cm3 of water at 27 °C. The final temperature is 40 °C. Compute the specific heat of the metal. If heat losses to the surroundings are not negligible, is your answer greater or smaller than the actual value for the specific heat of the metal?
Define heat capacity and state its SI unit.
Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?
What are other units of heat? Name and define them.
Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.
Describe a method to determine the specific heat capacity of a solid (say, a piece of copper).
_______ is defined as the amount of heat required to raise the temperature of 1kg of a substance by 1°C.
Why is water used as a coolant in radiators of a car?
Two blocks P and Q of different metals having their mass in the ratio 2 : 1 are given same amount of heat. Their temperature rises by same amount. Compare their specific heat capacities.
Calculate the amount of heat energy required to raise the temperature of 200 g of copper from 20°C to 70°C. Specific heat capacity of copper = 390 J kg-1 K-1.
