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Einstein calculated that at absolute 0 the water molecule turns into photon

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13y ago

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What happend to air when it is compressed or allowed to expand?

When air is allowed to expand, it cools, and when it is compressed, it warms. Additional Information: Contraction, like compression is shrinkage that can actually be caused by cooling and should not be confused with compression.


Why should we visit earth?

Visiting Earth is an opportunity to experience diverse cultures, landscapes, and wildlife. It allows you to appreciate the beauty of nature and expand your understanding of the world and its inhabitants. Additionally, exploring Earth can create lasting memories and enrich your perspective on life.


What is a cycle in which air is warmed and warm air rises and air is cooled and cooled air sinks?

The process you are describing is known as convection. This cycle occurs when a fluid, in this case, air, is heated, causing it to expand and rise due to lower density. As the air rises, it cools, becomes denser, and eventually sinks back down to be reheated, thus continuing the convection cycle.


How would you extend the range of a voltmeter and ammeter?

if we would like to expand the range of voltmeter we should change the voltmeter resistance even to be appropriate . we should use a variable resistance to control of its value . I would extend the range of a voltmeter by adding resistance in series with it. I would extend the range of an ammeter by connecting resistance in paerallel with it.


Why do volcanoes erupt, and what happens during a volcanic eruption that kids should know about?

Volcanoes erupt due to the buildup of pressure from molten rock, gas, and ash beneath the Earth's surface. During a volcanic eruption, kids should know that lava, ash, and gases are released, which can be dangerous and cause damage to the surrounding area. It is important for kids to understand evacuation procedures and to stay informed about volcanic activity in their area.