fill the blank -2
A sharper needle will require less ...... to penetrate the skin.
force
For laminar flow, the frictional force is directly proportional to the product of ..... and the cross sectional area of the tube.
velocity gradient
An effective force multiplication could be achieved by.....
increasing area object
When a person swims under the water, water pressure is felt on the eardrum by the ears and becomes ... if the person dives too deep.
painfull
The pressure due to liquid columns of constant density or at a depth within a liquid is represented by the following formula:....
where
P= ro gh ; P=pressure ro=density g=acceleration of gravity h=height
The weight W and mass m of a body are related by ..... formula
W= m g
The absolute pressure is the sum of .... and .....
Patm ; Hydtrostatic pressure
The pressure in a container of liquid depends upon ..... of the liquid only and not upon ..... of the container.
height (depht) ; shape
Pressure is exerted.....in all directions in a static liquid.
equally
Since the fluid pressure .... with depth, the horizontal pressure on the pipe walls.....
increase ; increase too
Intravenous solutions are supplied in glass bottles and plastic bags. The pressure depends on the ...... of the solution surface above the point of input to the patient.
height
The pressure in a fluid at rest varies with depth h in the fluid according to the expression .....
ro g h
Pascal's law applies to any.....fluid.
enclosed
There are some examples of enclosed or nearly enclosed fluids in the body: ...
1) amniotic sac ; 2) cerebrospinal fluid ; 3) eyeball fluid
The prenatal patient should be cautioned against wearing too tight clothing since continuous pressure may produce fetal....
deformity
Every part of a stationary liquid is at equilibrium. This means that the vector sum of the forces exerted on any small volume of the liquid is exactly.....
zero
Dynamic viscosity is defined as the ratio of a shear stress to a.....
velocity gradient
A specialized hydrometer called a ...... is used to measure the..... of urine.
urinometer ; specific gravity
Archimedes discovered that objects apparently weigh less when weighed under water, and he used this fact to measure...
densities
The ..... of a substance is defined as its mass per unit volume.
density
Drops in pressure during liquid flow represent losses in ....
energy
According to Archimedes's principle, the magnitude of the buoyant force is ......../formula/, where....
Fa= Wair - Wwater ; Fa=archimedes' force Wair=weight object in air Wwater=weight object in water
Frictional forces also exist within the fluid. These forces which oppose the flow are referred to as....
internal frictional forces
The flow pattern of the liquid will affect the pressure gradient. The two types of flow are referred to as .... and ….. flow.
laminar ; turbulent
In a straight tube with smooth walls, a fluid tends to flow in smooth layers. This type of flow is known as ..... flow.
laminar
....is the ratio of the density of an object to a fluid (usually water).
specifc gravity
....is defined as the ratio of increase of velocity to the distance across which the increase occurs.
velocity gradient
A change in the pressure applied to a fluid is transmitted.....to every point of the fluid and to the walls of the container. The statement is known as ....
equally ; pascal's law
The resistance to flow is given by: .... /formula/, where....
R= 8nl/pi r4 ; n=viscosity l=lenght r=radius
If several objects of different densities but the same volume are immersed in a fluid, they will experience..... buoyant force
different