Water’s high specific heat allows it to absorb a significant amount of heat from the engine, effectively cooling it. This property makes water an efficient coolant for radiators in motor vehicles, helping to maintain engine temperatures within safe operating limits.
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Cryogenic engines are crucial components in rockets, utilizing extremely low temperatures to store and handle propellants like liquid hydrogen or liquid oxygen. This technology enables efficient propulsion for space exploration missions, launching spacecraft into orbit and beyond for various scientific ...
Specific heat refers to the amount of heat required to raise the temperature of one unit mass of a substance by one degree Celsius. It is a characteristic property of the substance and is measured in units of energy per ...
The inner walls of a thermos flask are shiny to reflect infrared radiation back into the liquid, thereby minimizing heat loss through radiation and helping to maintain the temperature of the contents for a longer period.
Sir James Dewar invented the Thermos flask in 1892. He designed it to minimize heat transfer by creating a vacuum between two layers, effectively keeping liquids hot or cold for longer periods.
The double walls of the shiny inner wall and the outer cover prevent heat from escaping or entering. The thermos flask’s design includes a vacuum between the double walls and a shiny inner surface to minimize heat transfer by conduction, ...
The time taken for the hot water to cool from 80°C to 70°C will be more than 10 minutes. As the temperature difference decreases, the rate of cooling also decreases according to Newton’s law of cooling. Therefore, it will take ...
Newton’s cooling law is applicable only when the difference in temperature is not very much. This law describes the rate of cooling of an object relative to the temperature difference between the object and its surroundings, assuming a small temperature ...
The law stating that the rate of cooling of an object is directly proportional to the temperature difference between the object and the medium around it is known as Newton’s law of cooling. This principle, formulated by Sir Isaac Newton, ...
The law stating that good emitters are good absorbers is known as Kirchhoff’s law. This principle explains that materials that efficiently emit radiation at a particular wavelength also absorb radiation at the same wavelength. It is a fundamental concept in ...