## Chapter 11: Fluids

 Define pressure - how does it differ from force? If the same force is applied to twice the area, what happens to the pressure? If the pressure of the atmosphere is about 15 pounds per square inch, and the top of your car is about 50 inches by 50 inches, what total force is exerted on the top of your car by the atmosphere? Why doesn't it crush the car top in? How do you find the pressure at a depth in a fluid? If you dive to a depth of 10 meters, how much additional pressure is exerted upon you? What is Pascal's Principle? What is a hydraulic press and what is it good for? How is Pascal's Principle used in the hydraulic press? Can a hydraulic press multiply force? Can it cause something to move further than the force which is applied to the press? Can it do both at the same time? What is the Bernoulli Principle? Is there really such a thing as a curveball pitch in baseball, or is it an optical illusion? How can the Bernoulli Principle cause a ball to curve? What is Archimedes' Principle? What was the basis for Archimedes' conclusion that the king's crown was not made out of solid gold? How can you make use of the buoyant force on an object to determine its density? If your heart were not pumping enough blood through an artery to supply your body's needs, what could be changed to increase the flowrate? If you could increase the blood pressure by 10%, or increase the radius of the artery by 10%, which would be more effective in increasing blood flow? If an artery started to expand because its wall was too weak to withstand the internal blood pressure, would that expansion relieve the stress or tension of the artery wall? What is the origin of the force which pushes the mercury up in a barometer? What force pushes a liquid up a drinking straw? What force moves air into your lungs when you breathe? *Pressure definition *Atmospheric pressure *fluid pressure *Pascal's principle *hydraulic press *hydraulic brakes *auto lift *Bernoulli equation *Baseball curve *Archimedes' principle *buoyancy *Poiseuille's law *Blood pressure *LaPlace's law *barometer *Drinking through straw *Breathing pressure *Ideal gas law
Index
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