Advertisements
Advertisements
प्रश्न
State the condition for the flow of heat energy from one body to another.
Advertisements
उत्तर
Heat energy always flows from a body at a higher temperature to a body at a lower temperature.
संबंधित प्रश्न
A solid of mass 50 g at 150 °C is placed in 100 g of water at 11 °C when the final temperature recorded is 20 °C. Find the specific heat capacity of the solid. (specific heat capacity of water = 4.2 J/g °C)
Water in lakes and ponds do not freeze at once in cold countries. Give a reason is support of your answer.
Write the approximate value of specific heat capacity of water in S.I. unit.
Find the time taken by a 500 W heater to raise the temperature of 50 kg of material of specific heat capacity 960 J kg-1K-1, from 18°C to 38° C. Assume that all the heat energy supplied by the heater is given to the material.
What impact will climate changes have on the crops of food?
A solid of mass 80 g at 80°C is dropped in 400 g water at 10°C. If final temp. is 30°C, find the sp. heat cap. of the solid.
A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as heat reservoir to keep juice bottles without freezing?
Explain, Why is it advisabile to pour cold water over burns, caused on human body, by hot solids?
The ratio of the specific heats `c_"p"/c_"v"=gamma` in terms of degrees of freedom 'n' is given by ______.
