4.5.5.1.1 Pressure in a Fluid 1 Flashcards

1
Q

What can a fluid be?

A
  • a fluid can either be a liquid or a gas
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does pressure in fluids cause?

A

pressure in fluids cause a force normal (at rights angles) to any surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Formula for pressure:

A
  • P = F/A
  • Pressure = Force normal to the surface / Area of that surface
  • Force (N)
  • Area (m2)
  • Pressure (N/m2) or (Pa - Pascal)
  • 1Pa = 1N/m2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The larger the SA…

A

the lower the pressure and vice versa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Things which depend on low pressure:

A
  • snow shoes
  • bed of nails
  • camel’s feet
  • comfy chair
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Things which depend on high pressure:

A
  • hypodermic syringe
  • sharp knife
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do particles of a gas act in a container?

A
  • particles widely spaced and moving rapidly in constant random motion
  • particles colliding with each other and with the walls of the container
  • when the particles collide with the wall - they exert a force which acts at right angles to the wall (along the normal)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do particles of a liquid act in a container?

A

particles are exerting a force at right angles to the walls of the container

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Pressure:

A

force exerted per unit area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly