# Shared Flashcard Set

## Details

Chapter 19: Liquids Questions
Chapter 19: Liquids Questions
18
Physics
12/31/2011

Term
 Give me an equation for pressure.
Definition
 F/A or Force/Area
Term
 Liquids exert ______ equally in all directions at all points within the liquid.
Definition
 pressure
Term
 The pressure exerted by a liquid at any point is proportional to the density of the liquid times the depth of that point below the liquid’s ______________
Definition
 surface
Term
 The total pressure at any given point in a liquid is the pressure exerted by the liquid plus the pressure of the __________________________
Definition
 air above it
Term
 Define: buoyancy
Definition
 The apparent loss of weight of an object immersed in a fluid
Term
 An immersed object displaces _______ of the fluid in which it is immersed.
Definition
 some
Term
 A completely submerged object always displaces a volume of fluid equal to its own ___________.
Definition
 volume
Term
 Define: Archimedes’ principle
Definition
 An immersed object is buoyed up by a force equal to the weight of the fluid it displaces
Term
 Give three principles of flotation.
Definition
 A. Object more dense than immersion fluid, it sinks. B. Object less dense than immersion fluid, it floats. C. Object equal in density of immersion fluid, it suspends.
Term
 A floating object displaces a weight of fluid equal to its own ______________.
Definition
 weight
Term
 Changes in pressure at any point in an enclosed fluid at rest are transmitted _______________ to all points in the fluid and act in all directions.
Definition
 undiminished
Term
 The hydraulic press is based on ________ principle
Definition
 Pascal's
Term
 Pressure of a liquid at rest does/does not depends on the shape of the container.
Definition
 does not
Term
 Give me an Equation for pressure (due to a liquid).
Definition
 (Weight density)(depth) More explanation: Pressure = F/A which is Weight/AreaWeight = weight density* volume so:Pressure = weight density*area*depth/areaThe area’s divide out giving us: Weight density * Depth
Term
 Define: buoyant force
Definition
 When an object is submerged, the fluid exerts an upward force equal to the weight of the displaced fluid
Term
 Define: displacement
Definition
 Volume of a fluid (air or fluid) replaced by an object
Term
 What controls the density of a submarine or ocean-liner?
Definition
 Water contained in its ballast tanks
Term
 How does a crocodile change his density?
Definition
 Swallowing stones
Supporting users have an ad free experience!