In winter, two thin shirts provide more comfort than one thick shirt because the layer of air trapped between the two shirts acts as an insulating medium. This air layer reduces heat loss from the body, keeping it warmer.
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Food cooks faster in a pressure cooker because the air pressure increases, which increases the boiling point of water. This higher boiling point allows the food to cook at a higher temperature, speeding up the cooking process.
300 K is equal to 27 °C. To convert from Kelvin to Celsius, subtract 273.15 from the temperature in Kelvin. Therefore, 300 K – 273.15 = 26.85 °C, which is approximately 27 °C.
The water remains cold in the pitcher due to the process of evaporation. As water evaporates from the surface of the pitcher, it absorbs heat energy from the surroundings, including the remaining water, cooling it down.
The latent heat of melting of ice is 80 Cal/g. This value represents the amount of heat required to convert 1 gram of ice at its melting point into water without changing its temperature.