All Questions
32
questions
0
votes
1
answer
218
views
Pressure force exerted by one half of the sphere into his other half
lets say we have some sphere under some pressure and I want to find what is the force pressing one-half of the sphere toward the
opposite half?,lets take one piece of area then the pressure force ...
- 111
1
vote
2
answers
209
views
How is pressure affected by horizontal force in fluid?
In the situation shown above, Point A is just near the wall at negligible distance. But how is pressure at A is due to weight of water and atmospheric pressure only,why does it not have any pressure ...
- 111
0
votes
1
answer
48
views
Pressure and velocity in fluid dynamcis
I want to ask whether someone could help me solving a problem in understanding the relationship between pressure and velocity in fluid dynamics, please?
Why do I know that particles are not by ...
- 135
3
votes
4
answers
2k
views
Pressure inside when a container is closed
Let us suppose that there is a container with its lid open sitting at the bottom of an ocean. The pressure at the bottom of the container will depend on the water column above it assuming only static ...
- 163
0
votes
2
answers
39
views
Sunlight-powered device set to change world: will it work? [closed]
Vast areas of desert sand are being shone on upon by the sun. Now that's some ENERGY!
Using this proposed apparatus:
Sunlight over large area is concentrated on steam chamber, where water turns into ...
- 340
0
votes
1
answer
76
views
Importance of fluid mechanics and mechanics in physics and pipes
How does mechanics help prevent the pipes from bursting?
How does it link to the pressure of a pipe?
How does fluid mechanics link to physics when its about the liquid phase of chemical processes?
- 5
0
votes
1
answer
295
views
Why does compressible fluid flow choke?
The most common explanation to this phenomenon which I have read is that the pressure disturbance signal cannot propagate upstream, as the medium in which it travels itself flows downstream, so ...
- 34
0
votes
1
answer
41
views
Why does the red arrow generate smoke when flying at high speed on a moon rocket?
Why does the red arrow generate smoke when flying at high speed on a moon rocket? I think it is because of the structure, the air in this location has expanded, so the air in this location has ...
- 2,040
0
votes
1
answer
54
views
Understanding the relationship between $P=F/A$ in brain ventricles
Humans have a hollow space (see the colored part in the diagram below) inside our brain where cerebrospinal fluid is produced and circulated.
A disease exists called "normal pressure hydrocephalus" ...
- 121
1
vote
1
answer
523
views
Why we consider pressure do not vary with height incase a gas in a vessel?
Why pressure do not vary with respect to height incase a gas contained in a vessel and atmospheric air pressure varies with respect to height.
for example we consider constant pressure in a mercury ...
- 175
5
votes
3
answers
878
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
2
votes
2
answers
164
views
Is pressure exerted by different forces on a fluid particle same? [closed]
If the closed container containing the fluid (not any air) is moving with some acceleration, can pressure due to a fluid particle's weight be equal to pressure due to a force exerted by another fluid ...
- 21
1
vote
2
answers
108
views
Physical meaning of variation of force of pressure with altitude in fluid
We usually prove that pressure is a function altitute Z. Imagine a cube in a fluid, then the force of pressure on the bottom surface is higher than the force of pressure on the top surface. But we don'...
0
votes
1
answer
580
views
Does venturi effect violate pascal's law?
If we use Bernouill's law to compare pressure between point 1 and point 2, we find that P(2)gdH=0, we conclute P(2)=P(1).
I must have made a mistake but where is?
0
votes
1
answer
429
views
"Non-smooth" flow of liquid poured from a milk carton
With milk poured from a newly opened carton, I have observed over the years that the flow of the liquid starts off flowing smoothly and continuously but after some time t becomes "sporadic" in such a ...
- 889