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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1answer
372 views
Uses and interpretation of the 'Bowen Ratio' ($B_o=SH/LE$)
The Bowen Ratio is the ratio of sensible heat flux to latent heat flux, so presumably it gives some information about the relative importance of these processes. But it is not clear how this ...
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1answer
49 views
Calculating the coefficient of thermal expansion in liquid
I am trying to write a matlab function that calculates the coefficient of thermal expansion of water from a given temperature. From what I understand the thermal expansion coefficient is calculated as ...
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0answers
23 views
Formula to calculate the density of satuared steam
I need to calculate (or look-up?) the density for saturated steam in a range of 8-12 bar. Is there a formula for this? It's ok if it's not perfectly exact.
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0answers
52 views
Water evaporation
It is known that molecules at the surface are strongly attached to each other (more attraction less repulsion) than those within the bulk attraction and repulsion are balanced). This is the molecular ...
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1answer
57 views
Time constant of ice melt
I'm familiar with problems of "how much ice can you melt given some amount of energy", but I'm writing to get some clarification on the time constant of this event. This question might be somewhat ...
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2answers
91 views
Pascal's law: pressure of fluid at different locations
I know that's stupid question, but I'm really confused what my teachers says, so I need to check that theory.
Here are just two ordinary connected containers, which are full of water.
On grounds ...
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1answer
36 views
Depends river stream on river level?
If we have referral particle in the middle of the river, will it's velocity increse with higher river level?
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1answer
89 views
Limescale formation at room temperature?
There is a large metal container in form of a cube made of stainless steel. It is used for storing water in it for technical uses. The problem is that all joints at the bottom of the container have ...
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1answer
125 views
What is the ion drag mechanism in dielectric heating?
While reading about dielectric heating on Wikipedia, I read about the ion drag mechanism but there wasn't enough information about.
I know there is another Phys.SE question talking about the ion drag ...
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0answers
130 views
Reduction in velocity in pipe
I have two pipes divided from main pipe. If I add one more pipe, what would be the amount of velocity in each pipes. I know the velocity of main pipe, then diameter and radius of each pipe.
Edit:
1) ...
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1answer
2k views
Water Electrolysis Calculations
From Wikipedia (http://en.wikipedia.org/wiki/Water_electrolysis#Efficiency):
The electrolysis of water requires a minimum of 237.13 kJ of electrical energy input to dissociate each mole.
Each ...
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0answers
80 views
If cars could run on water intead of gasoline, are we going to empty the oceans sooner or later? [closed]
Imagine that car engines producing a lot of energy from a very small
quantity of water are of very widespread use.
Does this pose a risk of running out of water on planet Earth ?
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0answers
1k views
How to determine size of a Heat Exchanger?
I am designing a Tube heat-exchanger, similar to this:
My process requires water (at room temperature, 18C ~ 22C) that is being pumped out of a small tank (300 Liters) to be heated in a ...
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0answers
141 views
Why is it that when I mix tea with hot water there appear to be far less floaters on the surface than if you mix with regular temperature water? [closed]
I've got loose tea that I pour to the bottom of a glass, then apply water, stir and drink. I've noticed that when the water in the water boiler has gone cold a larger portion of the tea remains ...
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0answers
208 views
Is the Hanging Gardens of Babylon mystery still unresolved? [closed]
I'm wondering if the water lifting secret method of Hanging Gardens of Babylon still unresolved.
I tried to find anything related to it at Google Patent but nothing was there related to it.
Does ...
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votes
1answer
214 views
Why is sometime it raining heavily but in a short time but in other time not so heavy but long? [closed]
Don't they pour down just the same amount of water at the end of the day?
I mean in the tropical countries.
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1answer
142 views
Percentage of water that is void or empty space?
At the atomic level, at sea level on earth, what percentage of normal pure drinking water is void or empty space? What percentage of lead (the kind used to insulate from nuclear radiation) is void or ...
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votes
1answer
38 views
Producing Ice with water in vacuum [closed]
Do you think producing ice in large volumes is possible using this method? - say 500 kilograms a day?
How much vacuum should the pump's capacity be to make that happen at sea level?
Can it happen in ...
-1
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0answers
102 views
When can a body of water glow in space?
How would superionic water be formed at the core of a giant water planet? The publication
Giant planets may host superionic water, E. Marris, Nature News, 22 March 2005,
states that water in ...
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votes
1answer
92 views
Sensible heat question (solving for temperature)
If $55 034.175 \rm{kJ }$ of heat are transferred to $150 \rm{kg}$ of ice at a temperature of $-12.15 ^\circ \rm{C}$, calculate the temperature of the resulting water.
Using $Q = mc(t_2-t_1)$ or ...
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votes
3answers
131 views
Water excitation with sine waves
I saw that video when they connected a water hose to a speaker emitting 24 hz sine wave, and its illusion on the shape of the follow going out of the hose (because the video capture rate is fixed at ...
-3
votes
1answer
176 views
What makes sound when a huge wave is coming in an ocean? [closed]
normally at ocean beaches the waves are normal but they make lot of that a person standing at far can even listen that sound
What makes that sound what going to happen a
