initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may makehot water freeze faster than cold waterin some ...
A. Water absorbs cold. B. Water releases heat. C. Water absorbs heat. D. Water is not affected by heat. 相关知识点: 试题来源: 解析 C。水煮沸变成蒸汽是因为水吸收了热量。A 选项水吸收冷错误;B 选项水释放热量不是变成蒸汽的原因;D 选项水不受热量影响错误,所以选 C。反馈...
Why does ice in a cooler with cold drinks lasts longer than a cooler with warm drinks? Sodium metal is soft whereas sodium chloride is very hard. Explain why. Why does gasoline not dissolve in water? Assume that NaCl vibrates just as forcefully as the particles in lead Pb. Explain why...
Water freeze at a temperature below 0° Celsius. Hot water freezes faster than cold water this is called Mpemba Effect. If the water isn’t pure, it will freeze at -2° or -3° degrees Celsius. Does Water Hardens Equally Fast Everywhere? Photo by George Becker: Pexels Has anyone ever w...
Does water boil faster with a lid? So put a lid on the pan. The air in the pan will heat up as the water heats up, and it circulates back into the water as it's heated. This helps bring thewater to 212 degrees F more quickly. ...
Great lineup of bagel sandwiches. Try "The Tater" with egg, bacon, scallion cream cheese and topped with a hash brown served on an everything bagel. As per the website: "Our bagels contain five simple ingredients. We hand-rolleach one, boilthem to create a delicious crust and chew, lo...
Let us now in thought connect a 2 kg stone to a 1 kg stone, and ask: ‘How fast will this new stone fall?’ Since it weighs 3 kg, we can deduce from our premises that ‘it will fall faster than a 2 kg stone’ (p). However, since its 1 kg part will fall more slowly than...
How the canned food, whether it is preserved at home or in a factory, is stored, will most likely have a vast impact on its shelf life. Canned food that is stored in a cool and dry place will almost always last a lot longer than canned food stored in a warm place that is exposed...
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Carom seeds (Ajwain) Try this: Boil one teaspoon of ajwain with 1 teaspoon jaggery in a glass of water. Have the warm concoction early in the morning on an empty stomach.Ajwain will not just induce your menstrual cyclebut also relieve cramp pain. ...