All Questions
6
questions
5
votes
3
answers
876
views
Why does air get trapped below water pouring into a glass?
The drinking-water-tap at my workplace has a low pressure continuous stream of water. When I pour water into a glass which has at least about (depth) 5cm of water in it, surprisingly large air bubbles ...
- 510
0
votes
2
answers
1k
views
Above-the-ground pool slope pressure calculation
I'm not sure this is the right place to ask this "homework" question, but I have a real life problem that requires calculation and I do not have the math knowledge to make them myself.
I have bought ...
- 109
0
votes
1
answer
136
views
How would pressure in a blob of water not subjected to any force field behave?
Here is my understanding of pressure, stemming from this physics.stackexchange answer and the idea that pressure in water at a certain depth is completely based on the gravitational acceleration the ...
- 556
6
votes
2
answers
4k
views
How come a whistling kettle starts whistling only when water boils, and not long before - due to hot air escaping under pressure?
A whistling kettle will start to whistle when the water boils and turns into a jet of steam which then exits the small aperture in the spout.
But why doesn't this happen much earlier - when the air ...
- 63
6
votes
4
answers
36k
views
Physics of the inverted bottle dispenser
When you invert a water-bottle in a container, the water rises and then stops at a particular level --- as soon as it touches the hole of the inverted bottle. This will happen no matter how long your ...
- 1,283
9
votes
3
answers
19k
views
Why should fluids be confined for Pascal's Law to be applicable
When is Pascal's law about fluid pressure propagation applicable? Is
it applicable to a closed circular pipe with a pump rotating the
fluid, but not to a tub of water. Most statements require only ...
- 3,798