Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics > Pressure > Flashcards

Pressure Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What is pressure?

A

Pressure is the force acting per unit of area

1Pa = 1N/m^2

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

What is a fluid?

A

Either a liquid or a gas

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

How does pressure act on the surfaces?

A

The pressure in fluids causes a normal force at right angles to any surface

Or

The humongous weight of your mum.

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

What affects the pressure of a FLUID?

A

Temperature, volume and depth

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

What are the two equations for pressure in a fluid?

A

P = M / V

P = ρgh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

need to understand how straws work

A

.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which direction does air pressure act in?

A

All directions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is atmospheric pressure at sea level?

A

101 kPa

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

What is the density of water?

A

997 kg/m^3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are barometers used to measure?

A

Atmospheric Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does a manometer measure?

A

Difference n Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Upthrust?

A

An upward force exerted by any fluid that opposes the weight of an immersed object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why do things rise in a fluid?

A

If the upthrust is greater than the weight of the object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When does an object sink?

A

If the density of the object is greater than the density of the fluid, the object can never displace enough fluid to create an upthrust that will hold its weight so it SINKS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When do objects float?

A

When its weight is equal to the upthrust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Archimedes Principle?

A

When an object is partially of fully immersed in a fluid, the fluid exerts an upward force on the object equal to the weight of the fluid displaced

17
Q

How can pressure be compared to Vol?

A

For a given mass at a constant temperature, the pressure is INVERSELY PROPORTIONAL to the volume.

18
Q

how can we describe the motion of the particles of a gas?

A

The particles more RANDOMLY

19
Q

What happens to a gas if the temperature is increased?

A

When there is a higher temperature, the pressure of the gas increases because they hit surfaces with higher force, so the number of impacts per second INCREASES, so the total force of impact increases

20
Q

What happens when one reduces the volume of a gas?

A

Impacts per second increases which increases the pressure

21
Q

How does compressing the gas affect the temperature?

A

Temperature increases when the gas is compressed because when compressing it does work on it and energy isn’t transferred quickly enough to the surroundings therefore it heats up

22
Q

What is Charles’ law?

A

As you increase temperature, the volume increases too.

They are directly proportional.

23
Q

What is Boyle’s Law?

A

As you increase pressure volume decreases

Physics (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions