PHY4

what is viscosity

• a fluids resistance to flow

• smooth and orderly flow. usually represented as parallel layers of fluid flowing smoothly over one another

• the force of attraction felt between molecules of a liquid and other molecules of that same liquid

• when a liquid forms a thin but strong layer at its surface

what is Archimedes principle?

• an object in a fluid will be pushed upwards by a force that is equal to the weight of the fluid it displaces

• calculates the rate of flow through a confined space or pipe

• force of attraction felt between molecules of a liquid and other molecules of that same liquid

• any change in pressure in a fluid will be transmitted to every portion of the fluid and to the walls of the containing vessel

what is Pascal's principle

• an object in a fluid will be pushed upwards by a force that is equal to the weight of the fluid it displaces

• any change in pressure in a fluid will be transmitted to every portion of the fluid and to the walls of the containing vessel

• method to calculate the rate of flow through a confined space or pipe

• the pressure between molecules of a liquid an other molecules of that same liquid

what determines the buoyant force an object feels

• the volume and density of the liquid that has been displaced. the mass of the object is relevant

• the volume and density of the liquid that has been displaced. the mass of the object is not relevant

• the volume and density of the object that has been displaced. the mass of the object is relevant

• the volume and density of the object that has been displaced. the mass of the object is not relevant

how to determine how much a floating object lies beneath the surface of the water its floating in

• look at the specific heat of the water. it will be equal to the percentage of the object above water

• look at the specific gravity of the water. it will be equal to the percentage of the water object above water

• look at the specific gravity of the object. it will be equal to the percentage of the object submerged

• look at the specific gravity displaced. it will be equal to the percentage of water submerged

what is adhesion

• the attractive force that a molecule feels towards molecules of some other substance

• the attractive force that a molecule feels towards molecules of itself

• the total pressure that is exerted on an object that is submerged in a fluid

• the pressure and density of the liquid that has been displaced

what is a fluid

• liquids that can flow and conform to the shapes of their containers

• liquids and gases that can flow and conform to the shapes of their containers

• gases that can flow and conform to the shapes of their containers

• solids that can flow and conform to the shapes of their containers

what kind of pressure can exist in liquids

• osmotic pressure

• hydrostatic pressure

• laminar pressure

• turbulent pressure

what is osmotic pressure

• the pressure associated with concentration gradients of solutes

• when solutes move from an area of low concentration to high concentration

• when solutes move from an area of high concentration to low concentration

• all of the above

when does laminar flow convert to turbulent flow

• when the fluids critical speed has been reached

• when the fluids flow is below the critical speed

• when the fluids critical speed has been exceeded

• when the fluids speed is equivalent at all points in the tube