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प्रश्न
Where am I?
The mean annual temperature is 25°C around me.
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उत्तर
Central Africa
संबंधित प्रश्न
Is it possible to heat a liquid or gas from above? Explain your answer.
The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.
Match the following
| 1. | Heat | 0o C |
| 2. | Temperature | 100o C |
| 3. | Thermal Equilibrium | kelvin |
| 4. | Ice cube | No heat flow |
| 5. | Boiling water | joule |
Find the final temperature of a copper rod. Whose area of cross-section changes from 10 m2 to 11 m2 due to heating. The copper rod is initially kept at 90K. (Coefficient of superficial expansion is 0.0021 /K)
______ determines the direction of the flow of heat.
Figure (a–d) shows the readings on four different thermometers. Indicate which of the reading shows the normal human body temperature?
For setting curd, a small amount of curd is added to warm milk. The microbes present in the curd help in setting if the temperature of the mixture remains approximately between 35°C to 40°C. At places, where room temperature remains much below the range, setting of curd becomes difficult. Suggest a way to set curd in such a situation.
Why are burns caused by steam more painful than those caused by boiling water at the same temperature?
Define absolute zero.
