# Chapter 60 - Going With the Flow Chapter 6 Click to edit...

This preview shows pages 1–9. Sign up to view the full content.

Click to edit Master subtitle style 9/23/11 Going With the Flow Chapter 6

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9/23/11 What is a Fluid? Both liquids and gases are fluids Air and water are fluids that commonly exert forces on the human body
9/23/11 Fluid Properties Density - mass/volume Viscosity – how thick the fluid; how much it clings

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9/23/11 Hydrostatic Pressure Force exerted by a fluid (air or water) Blanket example Greatest atmospheric pressure exerted at sea level Air = 21% oxygen; 78% nitrogen
9/23/11 SCUBA Diving Every 33 ft (10m) = 14.7 psi Compressed air (and regulators) in tank keeps air cavities open Lower depth = increased pressure 1 hour of air on surface

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9/23/11 Buoyancy Tendency for something to float Direction always vertically upward, against gravity: Buoyant force Hot air balloon or blimp – hot air weighs less than surrounding cooler air; use helium which is a less dense gas Center of buoyancy = body’s center of volume Torso easier to float than legs
9/23/11 Buoyancy Archimedes’ Principle Buoyant force acting on a body is equal to the weight of the fluid displaced by the body If buoyant force > gravity’s force object will float

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9/23/11 Buoyancy Muscle and bone very dense likely weighs more than the water it displaces sinks Salt water vs. fresh water Thicker wet suit Underwater weighing
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 30

Chapter 60 - Going With the Flow Chapter 6 Click to edit...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online