All Questions
Tagged with water everyday-life
168
questions
9
votes
3
answers
2k
views
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 ...
1
vote
4
answers
146
views
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? ...
- 47
3
votes
2
answers
129
views
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
12
votes
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 ...
- 161
1
vote
2
answers
200
views
Why do hot water droplets persist in cooler water?
I notice this phenomenon typically when mixing hot or warm water with cold water. Basically, tiny droplets of hot water travel inside the body of cooler water and persist. I have included a photo of ...
- 71
7
votes
3
answers
4k
views
Why does more ice melt slower than less ice?
I know that ice cubes that are larger melt slower because of their surface area. However, when you put more ice cubes in a cup, all the cubes melt slower than a cup with less cubes. I hope this makes ...
- 539
1
vote
0
answers
56
views
Why there is water produced on the phone if we keep our phone in our pocket for a longer time?
one day I kept my phone in my pant pocket, I haven't opened it for a long time. My phone is covered with a plastic case. So why the phone is getting wet when I observed it after some time even though ...
- 27
1
vote
1
answer
100
views
Gravity vs adhesion of a water droplet
How much volume can a water droplet that is attached to a vertical glass surface have before it begins to roll downwards?
- 195
3
votes
1
answer
74
views
Why does water come out of a bottle in waves?
So imagine you have a bottle of water or any type of liquid (like a bottle of milk that has just been opened)that is completely full or even three quarter of it is full,why does the water or milk come ...
- 31
1
vote
2
answers
368
views
Bubbles formed in standing water in glass
I kept a cold standing water in a glass for a while to warm it up. After a while I returned to see that small minute bubbles have formed in the glass. On closer inspection, the bubbles seem to not ...
- 2,042
4
votes
0
answers
81
views
Rain drop trails on a car window prefer certain paths. Why?
Why do the raindrops always flow down in the middle?
That's a question given to me by my seven year old son.
Some background:
We are sitting in a bus with two windscreen wiper blades.
I hope that ...
- 1,106
0
votes
1
answer
69
views
Why does temperature increase like this? [duplicate]
My book makes the following claim: Suppose you drop a bunch of large and small ice cubes of temperature $0$ degrees in a beaker of water, then you start heating the beaker, the temperature of the ...
- 147
1
vote
2
answers
216
views
Why does water feel hotter at larger volume?
Why does a 104°F pool/tub feel boiling hot, whereas a pot/cup of water at the same temperature does not feel hot at all.
(Normally a pot/cup of water won't be hot enough to cause one to immediately ...
- 11
-1
votes
2
answers
120
views
While washing clothes, does more water mean more cleaning? [closed]
While washing clothes, we are used to thinking that more soapy water would clean better. Adding more water feels wrong because it reduces the 'soapiness'. Does adding more water actually decrease the ...
- 12.5k
1
vote
1
answer
374
views
Why does a small puddle of water evaporate faster at the edges than the center?
I have read that ceiling tile stains and coffee ring stains are darker on the edges than the center because the puddles evaporate fastest at the point of contact between the surface, air, and water ...
- 73