Chapter 5: Pressure

Question 1

What is the definition of pressure?

Answer 1

Pressure is the force acting per unit area

Question 2

What is the definition of density?

Answer 2

Density is defined as mass per unit volume

Question 2

What is Pascal’s principle or Pascal’s law?

Answer 2

If a pressure is applied to an enclosed liquid, the pressure is transmitted to all other parts of the liquid undeminished

Question 3

What is the formula for pressure acting on area?

Answer 3

Question 4

How to calculate pressure in a hydraulic press?

Answer 4

Question 5

What is the formula for density?

Answer 5

Question 6

What is the formula for pressure, when the height of a column of liquid is given?

Example: Manometer

Answer 6

Question 7

Does the volume or cross-sectional area of a liquid in a colum affect the pressure of the liquid?

Answer 7

Question 8

How to calculate pressure when a mercury barometer is given

Answer 8

Question 9

How can a manometer calculate pressure?

Answer 9

Question 10

What are the quanities that remain the same when a haos in a container is compresserd to half of its original volume at constant temperature

Answer 10

average speed of molecules:
* remains constant

pressure of gas:
* increases