The normal temperature of a human body is approximately 37 degrees Celsius (°C) when measured orally. This temperature serves as a baseline for assessing an individual’s health. It can vary slightly depending on factors such as age, time of day, ...
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Water is used in hot water bags because its specific heat is high, meaning it can absorb and retain a significant amount of heat. This property allows hot water bags to maintain their temperature for extended periods, providing effective warmth ...
Metal tea pots have wooden handles because wood is a poor conductor of heat, preventing the handle from becoming too hot to touch during use. This property ensures user safety by insulating against the heat generated by the hot contents ...
When hot water is sprinkled on a thick glass, the sudden temperature change causes the glass to expand rapidly. This expansion creates stress within the glass, which can exceed its tensile strength, leading to breakage. Therefore, the sudden expansion of ...
As water cools from 10°C to 0°C, its density decreases until it reaches 4°C, where it is at its minimum. Below 4°C, water begins to expand as it approaches the freezing point, causing its density to increase again. Therefore, the ...