Name 5 different ways to describe pressure

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sanjeetmanna | College Teacher | (Level 3) Assistant Educator

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  1. According to Boyles law pressure and volume are inversly propostional at constant temperature. PV = K
  2. Pressure is the force per unit area, P = F/A
  3. SI unit of pressure is pascal.
  4. When we describe the pressure of liquid at rest then it deals with the distribution of matter, where as for gas it deals with the molecular collisions with the walls.
  5. Pressure can also be described as energy per unit volume or energy density. P =E/V or P = Work/volume 

Example :-  If you want to get an injection, then pressure is important in getting the needle through your skin, less force is required to push the needle through the skin for sharper needle because of the less area of contact.

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helen75 | Student, Grade 10 | (Level 1) Salutatorian

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1

Pressure is defined as force per unit area. It is usually more convenient to use pressure rather than force to describe the influences upon fluid behavior. The standard unit for pressure is the Pascal, which is a Newton per square meter.

 

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2

Pressure in a fluid can be seen to be a measure of energy per unit volume

 

3

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Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air above that surface.

 

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4

the force applied to a unit area of surface; measured in pascals

 

 

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5

Pressure is an expression of force exerted on a surface per unit area. The standard unit of pressure is the pascal (Pa), equivalent to one newton per meter squared

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revolution | College Teacher | (Level 1) Valedictorian

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  • It is force per unit area
  • It is a force measured in Pascals
  • It can be used to find atmospheric force
  • It is a fluid.
  • It can be converted to Newtons

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