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WorksheetsFluid Statics & Dynamics
Total questions: 40
Worksheet time: 3hrs 20mins
An object moving through a fluid experience a retarding force called:
Drag force
Gravitational force
Terminating force
Frictional force
When weight of an object falling freely becomes equal to the drag force, then the body will move with:
Increasing speed
Decreasing speed
Constant speed
Constant acceleration
Turbulent flow is
Unsteady and regular
Steady and regular
Unsteady and irregular
Constantly Increasing
According to equation of continuity, A1V1 = A2V2 = constant. The constant is equal to:
Flow rate
Volume of fluid
Mass of fluid
Density of fluid
Velocity of fluid increases where the pressure differential is:
Lower
Greater
Constant
Zero
If cross-sectional area of pipe decreases, the speed of fluid must increase according to:
Continuity equation
Bernoulli's equation
Torricelli's theorem
Venture relation
Laminar flow is
Unsteady and regular
Steady and regular
Unsteady and irregular
Chaotic
Friction factor depends on
Reynolds number
diameter of pipe
roughness of pipe material
all of above
If every particle of fluid has irregular flow, then flow is said to be laminar flow.
TRUE
FALSE
Water
is a Compressible liquid
is an Incompressible liquid
Gatorade not only quenches your thirst better, it tastes better too, idiot
is hydrated HO
Turbulent flow is characterized by _______
low flow rates
irregular and chaotic flow
regular streamlines
constant speed
What is flow rate?
The derivative of flux
The rate at which you can save 15% or more
The speed which a fluid flows from one point to another.
What happens to viscosity in the case of incompressible fluids as temperature is increased?
It remains constant
It increases
It decreases
None of the mentioned
Which of the following is a fluid?
helium
ice
iron
gold
A cube of wood with a density of 0.780 g/cm3 is 10.0 cm on each side. When the cube is placed in water, what buoyant force acts on the wood? ( density of water = 1.0 g/cm3)
7.65 x 103 N
5.00 N
7.65 N
6.40 N
A water bed that is 1.5 m wide and 2.5 m long weighs 1055 N. Assuming the entire lower surface of the bed is in contact with the floor, what is the pressure the bed exerts on the floor?
250 Pa
260 Pa
270 Pa
280 Pa
A force of 30.0 N is exerted on a small piston of the hydraulic system. The cross-sectional area of the small piston is 0.05 m2 and that of the large piston is 0.10 m2. The weight of the object that the large piston can lift is ____.
60 N
40 N
100 N
150 N
A dam is constructed with wider and thicker base. Why is it wider and thicker at the base than at the top?
Much water is at the base than at the top.
Water is heavier at the base than at the top.
Liquid pressure is greater at the base than at the top.
It is easier to construct a structure with wider base & narrow top.
A constant pressure of 2 N/m2 acts on a given surface. This means ________
a force of 2 N acts on every 1 m2 of the surface.
a force of 2 N acts on every 1 m of the surface.
a force of 2 N acts on the whole surface.
the area of the whole surface is 2 m2.
Which statement about force and pressure is correct?
Force and pressure are the same but expressed in different units.
Force is greater than pressure.
Pressure depends on the force acting on a given area.
Force is pressure per unit area.
Neglecting the effect of atmospheric pressure, the pressure at the bottom of a 5.0 m deep swimming pool filled with water is _______.
2.5 x 103 kg/m2
49 x 103 Pa
49 x 103 N/m3
2.5 x 104 N
If an object has a volume of 10 mL and a mass of 20 g, what is its density?
.5 g/mL
200 g/mL
2 g/mL
The magnitude of the buoyant force is equal to the weight of fluid displaced by the object _____.
for every object submerged partially or completely in a fluid
only for an object that floats
only for an object that sinks
for no object submerged in a fluid
One litre of water occupies a volume of
100 cm3
250 cm3
500 cm3
1000 cm3
According to Archimede's principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body.
equal to
less than
more than
unpredictable
What is an ideal fluid?
A fluid which has no viscosity
A fluid which is incompressible
A fluid which has no surface tension
All of the above
If you put a brick in a tub filled to the top with water (and it sinks), the amount of water that overflows is equal to the volume of the brick.
Depends on whether it is sea water or fresh water
Water emerges from a horizontal pipe of varying cross section. If it enters to the pipe with a velocity 0.2 m/s where the area of cross section is 0.5 m^2 and leaves at the end of pipe having area of cross section 0.2 m^2, what is the velocity of water coming out of the pipe?
0.2 m/s
0.5 m/s
0.4 m/s
0.25 m/s
This principle states that the faster a fluid moves, the less pressure the fluid exerts.
Bernoulli's Principle
Newton's Principle
Pascal's Principle
Archimedes' Principle
Bend Air like Aang
What is the SI unit of measurement for pressure?
Pascals
Grams
Millimeters
Pounds
The diagrams show, to the same scale, the vertical sections of a set of circular vessels, each containing the same depth of water.
The water exerts the same pressure on the base of each vessel.
The water exerts the greatest pressure on the base of vessel S.
The water exerts the greatest pressure on the base of vessel P.
The water exerts the same force on the base of each vessel.
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean at the bottom of this trench, given its depth is 11.0 km and assuming the density of seawater is constant all the way down. 1200 kg/m^3
1200x10x11
1200x11
1200x11000x10
1200x10
Which of the following are Units for Pressure?
psi
mmHg
torr
atm
Which of the following is the pressure at sea level exerted by the Earth's atmosphere?
101 kPa
14.7 psi
760 mmHg
760 torr
1 atm
Which of the following are true about Buoyancy?
The density of a floating object is less than the density of the fluid it floats in
The Buoyant force of a fluid is equal to the weight of the displaced fluid
An object that sinks displaces an equal volume of fluid.
Buoyant forces are only exerted by liquids
Which of these are true?
Saturn could float on water
An iron anvil will float on liquid mercury
The earths layers are separate because of density differences
Salt water is more dense than fresh water
Viscosity is
The ability of a fluid to flow
The residence of a Fluid to flow
The measure of density of a fluid
greater for liquids than gases
