Understanding Pressure in Outer Space: Equilibrium and Volume Variations

In summary, the conversation discusses the concept of pressure in outer space and uses the example of a cube to demonstrate how pressure acts on small volume elements. It also mentions the idea of equilibrium and the relationship between pressure and volume. The post is not written in clear English and may be difficult to understand.
  • #1
nomorevishnu
34
0
Pressure in outer space!

lets imagine a cube kept in the outer space...and let's take a small element inside the cube...with thickness dy and width dx...or the smalles volume elemnt inside the cube would be another cube right...and...it would be in equilibrium...so the pressure actin on that element from the top and the bottom are going to be the same ...

think abt two cubes ...two different volumes...kept somewhere in the outerspace...take two elements in each of the cubes...the elements r still going to be in equlibrium...but the magnitudes of the pressure actin on both the elemnts r going to different right?...as pressure varies with volume...??
 
Physics news on Phys.org
  • #2
Try to write your post in english.
 
  • #3
wht do u mean?...r u talkin abt the typos?...guys, is the post not in english?...help with an answer someone please...
 
  • #4
Those are English words, sure 'nough, but the way that they're put together doesn't make a lot of sense. You've got a lot of partial information and partial questions, none of which add up to a coherent post. Try to rephrase it with all relevant parts included.
 
  • #5
For starters, cubes of what and where is this pressure coming from?
 
  • #6
nomorevishnu said:
lets imagine a cube kept in the outer space...and let's take a small element inside the cube...with thickness dy and width dx...or the smalles volume elemnt inside the cube would be another cube right...and...it would be in equilibrium...so the pressure actin on that element from the top and the bottom are going to be the same ...

think abt two cubes ...two different volumes...kept somewhere in the outerspace...take two elements in each of the cubes...the elements r still going to be in equlibrium...but the magnitudes of the pressure actin on both the elemnts r going to different right?...as pressure varies with volume...??
Let me know if I got this right. There's this cube somewhere. Inside the cube, for any volume element dV = dxdydz, the pressure on one side of the element is equal to the pressure on the other side, for all three dimensions. This cube happens to be in equilibrium.

(I imagine it is possible to have a volume with a pressure gradient to be in equilibrium if there's an external force being applied that depends on position. For example, if we ignore the Earth's rotation and the heating of the sun, then the Earth's atmosphere would be in equilibrium, even though it would thin out as the distance R from the Earth's center increases. This is possible because of the Earth's gravity. I imagine the converse would be true too.)

I'm not quite sure what you were asking, but hopefully this helps.
 

1. What is pressure in outer space?

Pressure in outer space refers to the force exerted on an object by the surrounding gas or fluid. In the vacuum of space, pressure is caused by the particles of gas or radiation colliding with an object.

2. How does pressure affect objects in outer space?

In outer space, pressure can cause objects to expand or contract depending on the equilibrium between the internal and external pressure. If the pressure inside an object is greater than the external pressure, it will expand. Conversely, if the external pressure is greater, the object will contract.

3. What is equilibrium in relation to pressure in outer space?

Equilibrium in regards to pressure in outer space refers to the balance between the internal and external pressures acting on an object. When the internal and external pressures are equal, the object will not experience any changes in volume.

4. How do volume variations occur in outer space?

Volume variations in outer space occur when the pressure acting on an object changes. If the pressure decreases, the object will expand, and if the pressure increases, the object will contract. This is due to the equilibrium between the internal and external pressures being disrupted.

5. How do scientists measure pressure in outer space?

Scientists use instruments such as pressure gauges, manometers, and barometers to measure pressure in outer space. These instruments work by detecting the force exerted by the gas or fluid on a surface, and converting it into a measurable value.

Similar threads

Replies
7
Views
803
Replies
15
Views
2K
Replies
1
Views
1K
Replies
14
Views
1K
Replies
4
Views
5K
Replies
23
Views
984
Replies
6
Views
1K
  • Introductory Physics Homework Help
Replies
2
Views
846
Replies
12
Views
2K
Replies
7
Views
783
Back
Top