All Questions
Tagged with water thermodynamics
577
questions
0
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6
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152
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Why won't there be any transfer of heat energy when ice at 0°C is in contact with water at 0°C in a closed container?
In my book, Concise Physics of Selina Publications for Class IX, it's written there that "If there is no transfer of heat between the two bodies placed in contact, they are said to be at the same ...
- 23
1
vote
1
answer
47
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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....
- 1,090
6
votes
2
answers
381
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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 ...
- 169
9
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3
answers
2k
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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 ...
0
votes
0
answers
35
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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 ...
- 1
3
votes
1
answer
94
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Does having a liquid (less dense than ice) above a floating (in water) ice cube, change the fact that the water level remains constant when ice melts?
An ice cube floats in water, with a liquid (less dense than ice) above it. When the ice cube melts will the water level go up, down or remain constant?
- 135
2
votes
2
answers
74
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Can latent heat exist when both phases cannot exist at same temperature?
This is my understanding (please tell me if i am going wrong anywhere):
During phase change (i.e. ice melting into water) the molecules absorb heat, gain more random kinetic energy, and spread apart (...
2
votes
2
answers
75
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For a liquid at boiling point, how can it require a set amount of heat (latent heat) to vaporize
I've always had a hard time wrapping my head around the 2 below statements being true for vaporizing a liquid into a gas:
When a liquid reaches its boiling point the temperature stops rising (and any ...
- 21
0
votes
1
answer
88
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Peltier Thermoelectric Module - Water Cooling
My questions concerns calculations about a Peltier Thermoelectric Module for the cooling of water between an inlet and outlet. The Peltier water cooling module I am referring to is the following: ...
- 1
2
votes
1
answer
38
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Hysteresis in volume of liquids and solids vs temperature
We were asked as a lab experiment to measure the volume occupied by water and ethyleneglicol as a function of its temperature by having a flask inside a body of water at the desired temperature. Then, ...
3
votes
2
answers
129
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Why does water warm gradually when a faucet is opened?
When you turn on a hot water tap after some idle period, you first get the cooler water that's been in the pipe, then gradually it warms up to the tank temperature.
I've wondered why the warmup is ...
- 141
1
vote
2
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317
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Effect of impurities on boiling and freezing points
When impurities like salt is added to water, the boiling point of water increases because of what I think is vapour pressure, though I know very little about that too. However, with the same analogy, ...
- 19
12
votes
3
answers
3k
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Can water at absolute zero still be liquid?
We see this interesting phenomenon with water bottles in cold chillers left undisturbed for a long time; the water within remains a liquid, but a small kinetic shock, such as a tap, shake or pour, ...
- 461
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0
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Does air gap between enclosed chamber and manometer influence the manometer reading?
We have an enclosed chamber filled with water. From the top of the chamber there is a metallic tube connecting the chamber to a monometer. We increase the pressure of the water inside the chamber buy ...
12
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9
answers
5k
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Could one perform a test to determine whether water was warmed by a microwave rather than over a flame?
If I warmed two cups of water from 20 °C to 90 °C, one in a microwave and one over a flame. Is there a test that could be performed to determine how each cup was warmed? Are there residual effects ...
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