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Archived thread of Why does hot air rise? from the physics forums community for science discussion and specifically Why does hot air rise? Classical Physics ... Why does hot air rise? What I'm really getting at is why should the speed of kinetic motion of the individual atoms of heated air rise compared to it's slow...
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www.physicsforums.com/archive/index.php/t-32331.html
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[Archive] does hot air rise? Classical Physics ... so surely hot air, in it's attempt to rise from the bottom to the top of a container, would collide with colder air and hence heat these molecules and cause them to rise instead. so basically what i'm wondering is does hot air rise, or is it just the heat that rises?
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www.physicsforums.com/archive/index.php/t-157869.html
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A less dense gas is accelerated faster and hence it rises in comparison with the surrounding cold air. For cold air the pressure neatly cancels the force due to gravity which gives us the stable atmosphere. As this packet of hot air rises, it expands to maintain pressure equilibrium with its surroundings and cools down.
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www.newton.dep.anl.gov/askasci/phy99/phy99068.htm
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Let us imagine you have a slice of white bread. If you put in water, it will float. Now take another slice of white bread and SQUEEZE it into a tiny little dough ball. Put that ball in water and it sinks. It is the same amount of bread - it ways the same - but ... NEWTON is an electronic community for Science, ... Back to Physics...
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www.newton.dep.anl.gov/askasci/phy99/phy99253.htm
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Hot air balloons are also an ingenious application of basic scientific principles. In this article, we'll see what makes these balloons rise up in the air, and we'll also find out how the balloon's design lets the pilot control altitude and vertical speed.
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www.howstuffworks.com/hot-air-balloon.htm
www.howstuffworks.com/hot-air-balloon.htm
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Re: How does a hot air balloon rise. Date: Thu Mar 5 21:13:42 1998; Posted By: Matthew Buynoski, Senior Member Technical Staff,Advanced Micro Devices; Area of science: Physics; ID: 888974987.Ph ... The rising of your hot air balloon is an example of one of the fundamental forces of the cosmos.
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www.madsci.org/posts/archives/mar98/889215215.Ph.r.html
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Subject: How does a hot air balloon rise. ... Date: Tue Mar 3 19:29:47 1998; Posted by Ben Bennett; Grade level: 4-6; School: Morgan Twp. Schools; City: Valparaiso State/Province: IN; Country: USA; Area of science: ... I think it has something to do with hot air is less dense than cool air. But I don't know why. Thank you.
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www.madsci.org/posts/archives/mar98/889215215.Ph.q.html
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