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प्रश्न
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संबंधित प्रश्न
Write the expression for the heat energy Q received by the substance when m kg of substance of specific heat capacity c Jkg-1 k-1 is heated through Δt° C.
The specific heat capacity of a body depends on _____________ .
Indian style of cooling drinking water is to keep it in a pitcher having porous walls. Water comes to the outer surface very slowly and evaporates. Most of energy needed for evaporation is taken from the water itself and the water is cooled down. Assume that a pitcher contains 10 kg of water and 0.2 g of water comes out per second. Assuming no backward heat transfer from the atmosphere to the water, calculate the time in which the temperature decrease by 5°C. Specific heat capacity of water = 4200 J kg−1 °C−1 and latent heat of vaporization of water = 2.27 × 106 J kg−1.
State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.
A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find its specific heat capacity in S.I unit.
Explain, why temperature in hot summer, falls sharply after a sharp shower?
Write an expression for the heat energy liberated by a hot body.
Explain why the specific heat capacity at constant pressure is greater than the specific heat capacity at constant volume.
An office room contains about 4000 moles of air. The change in the internal energy of this much air when it is cooled from 34° C to 19° C at a constant pressure of 1.0 atm is (Use `gamma_"air"` = 1.4 and Universal gas constant = 8.314 J / mol K) ____________.
Conductors have generally high specific heat capacities and insulators have low specific heat capacities.
