What is Pressure?

• What is the definition of pressure?

  Force per unit of area
• How can pressure be quantified?

  Using the formula: pressure = force/area
• If you apply 800 newtons of force to a nail head area of 0.0001 m², what is the pressure generated?

  8 million pascals
• What creates pressure in fluids like liquids and gases?

  Collisions of particles with their surroundings
• What is fluid pressure?

  Pressure generated by liquids and gases
• What type of force is used to calculate pressure?

  Perpendicular force to the surface
• How does the angle of collision affect pressure generation?

  Perpendicular collisions generate more pressure
• How do you calculate the perpendicular force from pressure and area?

  Force = pressure × area
• What is the pressure in pascals if it is given as 60 kilopascals?

  60,000 pascals
• What is the force exerted on a 0.5 m² area at 60 kilopascals?

  30,000 newtons
• What are the steps to calculate force from pressure and area?

  1. Convert pressure to pascals if necessary
  2. Use the formula: Force = Pressure × Area
  3. Calculate the force
• What are the differences between solid and fluid pressure generation?

  • Solid pressure: Direct force application
  • Fluid pressure: Particle collisions with surroundings
• What happens when particles collide with a container wall?

  • They apply force to the wall
  • This creates pressure inside the container
• How does the angle of impact affect the pressure exerted by a particle?

  • Perpendicular impact maximizes pressure
  • Angled impact reduces effective pressure