Questions tagged [water]
Two Hydrogen atoms covalently bonded to one Oxygen atom. One of the more common compounds on the surface of the earth.
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Energy Benefits of Using Windows Vacuums to Remove Water That Otherwise Evaporates and Absorbs Energy
I've been using a new window vac and pondering its effect on the temperature in the house - and there seems nothing written about this that I can find. Plainly when the water evaporates energy is ...
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Why rain drops are spherical while water droplets on a glass surface are flat?
Why are raindrops spherical when falling through the air, but lose their spherical shape when they are on a flat surface?
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Does Pipe Temperature Directly Correlate To Water Temperature? [closed]
I need to know if just by taking a boiler flow pipe temperature that will tell me the water temperature that is flowing through the pipe.
For example if the water from the boiler travelling through ...
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If I'm inside water, is the amount of heat energy I can receive capped because water can't go above 100°C?
I just learned about double-boiling, where instead of putting a pot directly on the flame stove (where it can get too hot), you put a big tub of water on the flame, and put the pot in the tub of water....
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Intuition about SCAN-DFT
I am currently performing molecular dynamics simulations of water/ice and would like some intuition behind some of the results I am seeing. For context, I am using the water model described in this ...
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Drying polymers (e.g. FDM 3D printing filaments)
As far as I understand, a polymer absorb some moisture and amount of (maximum) moisture that can be absorbed depends on its type (PLA ~1%, ABS? ~10%). Both simple commercial filament dryers and drying ...
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Velocity Needed For Water To Overcome Adhesion Force To A Rounded Steel Inclined Plane
Context: I work at a fast food restaurant with a 3-module sink. The sides are slightly angled down to allow the water to trickle down into the compartments. I found that water clings to the side of ...
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Earthen Pots made in summers vs winters
I've heard my parents saying that the water in earthen pots that are made in winters cools more than a pots that are made in summers. Is this true according to physics? I understand the process of ...
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Rotating a Pot of Boiling Water on a Stove
I have just boiled a half dozen eggs and wanted to ask about a phenomenon I have witnessed for years but have bottled up inside for so long. Why, when the water is near boiling and nice and hot, does ...
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How do bubbles on water surface merge?
When we open a tap over a water surface, we get to see a lot of bubbles ("half merged in the water") coming out on the surface.
Now what I saw was that two such nearby half bubbles merge to ...
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Why does $\rm{H_2 O}$ have 12 degrees of freedom?
I know there will be 3 translational D.O.F. and 3 rotational D.O.F., and it can have 4 vibrational D.O.F. (one potential and one kinetic) for each O-H Bond. But from where does 2 more D.O.F. come from?...
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Water and ice, scales [closed]
There are scales with an identical bowl on each pan. We pour some amount of water into the first bowl. We pour less water and put an ice cube into the second bowl so the level of water in both bowls ...
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How long for boiling water to cool down in a cooler?
I have no knowledge in physics but I drink green tea, and it requires water at 70 degree (so does the package say). My boiler can only heat to 100 degrees (not below), so I would like to know how long ...
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Difficulties understanding fluid flow claims in the context of animal physiology/cardiovascular networks
A topic that has repeatedly given me confusion is the notion of fluid flow through animal vasculature. I find that many of the 'physics 101' basic notions of fluid dynamics are not well-suited to deal ...
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General Doubt. My doubt about combustion
When we give flame to a newspaper it burns readily. What we need for a fire (fuel, heat, Oxygen) is also known as the fire triangle. But why does the paper not burn when we pour boiling water over it? ...
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