Deck 9: Fluids and Solids

Question 1

In a large tank of liquid,the hydrostatic pressure at a given depth is a function of

A)depth.
B)surface area.
C)liquid density.
D)Choices a and c are both valid.

Answer 1

Choices a and c are both valid.

Question 2

A container is filled with water and the pressure at the container bottom is P.If the container is instead filled with oil having specific gravity 0.80,what new bottom pressure results?

A)a pressure < P
B)the same pressure P
C)a pressure > P
D)This is unable to be determined with the information given.

Answer 2

a pressure < P

Question 3

A container is filled with water and the pressure at the bottom of the container is P.Then the container is emptied halfway and topped off with oil of density 0.8 × 10³ kg/m³,which floats on top of the water.What is the pressure at the bottom of the container now?

A)a pressure < P
B)the same pressure P
C)a pressure > P
D)This is unable to be determined with the information given.
E)​a pressure < 0.5P

Answer 3

a pressure < P

Question 4

A Boeing-737 airliner has a mass of 20 500 kg.The total area of the wings is 105 m².What must be the pressure difference between the top and bottom of the wings to keep the airplane up?

A)1.91E+3 Pa
B)1.99E+1 Pa
C)1.95E+2 Pa
D)1.92E+3 Pa
E)1.81E+3 Pa

Question 5

A cube-shaped box is sitting on the floor.The pressure the box exerts on the floor is 235 Pa.If the density of the box is 21.0 kg/m³,what is the length of each side of the box?

A)0.00910 m
B)1.14 m
C)110 m
D)11.2 m

Question 6

By what factor is the total pressure greater at a depth of 900 m in water than at the surface where pressure is one atmosphere? (water density = 1.0 × 10³ kg/m³,1 atmosphere pressure = 1.01 × 10⁵ N/m²,and g = 9.8 m/s²)

A)8.9
B)88
C)98
D)78
E)8 800

Question 7

Which state of matter is associated with the very highest of temperatures?

A)liquid
B)plasma
C)gas
D)solid

Question 8

If the column of mercury in a barometer stands at 73.0 cm,what is the atmospheric pressure? (The density of mercury is 13.6 × 10³ kg/m³ and g = 9.80 m/s²)

A)9.73E+4 N/m²
B)9.73E+6 N/m²
C)1.17E+5 N/m²
D)1.83E+3 N/m²
E)1.01E+5 N/m²

Question 9

What is the total mass of the Earth's atmosphere? (The radius of the Earth is 6.4 × 10⁶ m,and atmospheric pressure at the surface is 10⁵ N/m². )

A)5 × 10¹⁶ kg
B)1 × 10¹⁸ kg
C)5 × 10¹⁸ kg
D)1 × 10²⁰ kg

Question 10

The Greenland ice sheet can be one km thick.Estimate the pressure underneath the ice.(The density of ice is 918 kg/m³. )

A)9.0 × 10⁵ Pa (9 atm)
B)2.5 × 10⁶ Pa (25 atm)
C)4.5 × 10⁶ Pa (45 atm)
D)9.0 × 10⁶ Pa (90 atm)

Question 11

What is the total force on the bottom of a 2.0-m-diameter by 1.5-m-deep round wading pool due to the weight of the air and the weight of the water? (Note the pressure contribution from the atmosphere is 1.0 × 10⁵ N/m²,the density of water is 1 000 kg/m³,and g = 9.8 m/s². )

A)5.1E+5 N
B)1.4E+6 N
C)2.1E+5 N.
D)3.6E+5 N
E)2.1E+5 N

Question 12

A solid object is made of two materials,one material having density of 2 500 kg/m³ and the other having density of 6 500 kg/m³.If the object contains equal masses of the materials,what is its average density?

A)3 611 kg/m³
B)4 500 kg/m³
C)4 611 kg/m³
D)9 000 kg/m³
E)more information is needed

Question 13

A 14 500-N car on a hydraulic lift rests on a cylinder with a piston of radius 0.100 m.If a connecting cylinder with a piston of 0.050-m radius is driven by compressed air,what force must be applied to this smaller piston in order to lift the car?

A)1.45E+4 N
B)5.80E+1 N
C)4.13E+3 N
D)3.53E+3 N
E)3.63E+3 N

Question 14

The pressure inside a commercial airliner is maintained at 1.00 atm (10⁵ Pa).What is the net outward force exerted on a 1.0 m × 2.0 m cabin door if the outside pressure is 0.30 atm?

A)140 N
B)1 400 N
C)14 000 N
D)140 000 N

Question 15

The quantity "pressure" expressed in terms of the fundamental quantities (mass,length,time)is equivalent to

A)MLT−¹.
B)ML−¹T−².
C)M²L−¹T−³.
D)a dimensionless quantity.

Question 16

An ice cube with a small solid steel sphere frozen inside floats in a glass of water filled to the brim.What happens to the level of water in the glass as a result of the ice melting?

A)It goes up,overflowing.
B)It stays the same.
C)It goes down.
D)It depends on air pressure,thus the answer is indeterminate.

Question 17

A 1.00-kg platinum-iridium cylinder is 26.0 mm in height and 40.0 mm in diameter.What is the density of the material?

A)30.6 g/cm³
B)29.8 g/cm³
C)31.2 g/cm³
D)10.0 g/cm³
E)59.6 g/cm³

Question 18

A stonecutter's chisel has an edge area of 0.50 cm².If the chisel is struck with a force of 45.0 N,what is the pressure exerted on the stone?

A)9.0E+2 Pa
B)9.0E+3 Pa
C)9.0E+4 Pa
D)9.0E+5 Pa
E)4.5E+5 Pa

Question 19

A solid object is made of two materials,one material having density of 2 500 kg/m³ and the other having density of 6 000 kg/m³.If the object contains equal volumes of the materials,what is its average density?

A)3 529 kg/m³
B)4 250 kg/m³
C)5 250 kg/m³
D)8 500 kg/m³
E)more information is needed

Question 20

When water freezes,it expands about nine percent.What would be the pressure increase inside your automobile engine block if the water in there froze? (The bulk modulus of ice is 2.0 × 10⁹ Pa,and 1 atm = 1.0 × 10⁵ Pa. )

A)18 atm
B)270 atm
C)1 080 atm
D)1 800 atm

Question 21

As ice floats in water,about 10% of the ice floats above the surface of the water.If we float some ice in a glass of water,what will happen to the water level as the ice melts?

A)The water level will rise 10% of the volume of the ice that melts.
B)The water level will rise,but not as much as the 10% indicated in answer
C)The water level will remain unchanged.
D)The water level will become lower.

Question 22

How deep under the surface of a lake would the pressure be double that at the surface? (1 atm = 1.01 × 10⁵ Pa)

A)1.00 m
B)9.80 m
C)10.3 m
D)32.2 m

Question 23

What volume of water is displaced by a submerged 2.0-kg cylinder made of solid aluminum? (aluminum density = 2.7 × 10³ kg/m³ and water density = 1.0 × 10³ kg/m³)

A)5.4E+3 m³
B)7.4E-4 m³
C)7.4E+2 m³
D)5.4E-3 m³
E)6.4E-4 m³

Question 24

A U-tube is partially filled with water and then an immiscible liquid is added to the right side.The top of the liquid is a distance h₁ above the level of interface between the liquid and water.On the left side of the tube the top of the water is a distance h₂ above the liquid-water interface on the right side.What is the density of the liquid in terms of the density of water
? Note that h₂ < h₁.

A)
B)
C)
D)

Question 25

Legend says that Archimedes,in determining whether or not the king's crown was made of pure gold,measured its volume by the water displacement method.If the density of gold is 19.3 g/cm³,and the crown's mass is 600 g,what volume would be necessary to prove that it is pure gold?

A)3.1E+1 cm³
B)3.2E-2 cm³
C)3.2E+1 cm³
D)3.0E+1 cm³
E)​1.2E+4 cm³

Question 26

A cube of wood of density 0.780 g/cm³ is 11.2 cm on a side.When placed in water,what height of the block will float above the surface? (water density = 1.00 g/cm³)

A)8.74 cm
B)11.2 cm
C)2.46 cm
D)3.46 cm
E)1.46 cm

Question 27

Dams at two different locations are needed to form a lake.When the lake is filled,the water level will be at the top of both dams.The Dam #2 is twice as high and twice as wide as Dam #1.How much greater is the force of the water on Dam #2 than the force on Dam #1? (Ignore atmospheric pressure;it is pushing on both sides of the dams. )

A)2
B)4
C)8
D)16

Question 28

A fountain sends water to a height of 113 m.What must be the pressurization (above atmospheric)of the underground water system? (1 atm = 10⁵ N/m²)

A)1.0 atm
B)47.1 atm
C)12.1 atm
D)11.1 atm
E)0.115 atm

Question 29

The bottom of a flat-bottomed aluminum boat has area = 4.10 m² and mass = 65.0 kg.If two fishermen and their fishing gear with total mass of 305 kg are placed in the boat,how much lower will the boat ride in the water? (H₂O density = 1.0 × 10³ kg/m³)

A)0.0159 m
B)0.0585 m
C)0.0744 m
D)0.0902 m
E)1.25 m

Question 30

When lying down,the gauge pressure of the blood at a patient's heart is 13.3 kPa.If the patient suddenly stands up and her body doesn't compensate quickly enough for the pressure changes,what would be the pressure at her head,55.0 cm above her heart? The density of blood is 1 060 kg/m³.

A)7.59E+3 Pa
B)5.71E+3 Pa
C)1.90E+4 Pa
D)5.85E+5 Pa

Question 31

A ping-pong ball has an average density of 0.0840 g/cm³ and a diameter of 3.80 cm.What force would be required to keep the ball completely submerged under water?

A)1.000 N
B)0.788 N
C)0.516 N
D)0.258 N

Question 32

The spring of the pressure gauge shown in the figure has a force constant of 900 N/m,and the piston has a radius of 1.5 cm.
As the gauge is lowered into water,what change in depth causes the piston to move in by 0.88 cm? The density of water is 1 000 kg/m³.

A)1.1 m
B)0.054 m
C)76 m
D)0.017 m

Question 33

At a pressure of 1 atmosphere a column of mercury in a barometer is supported to the height h = 0.76 m.The density of mercury is 13.6 × 10³ kg/m³.A barometer of similar design filled with water would support a column of water how high at a pressure of 1 atmosphere?

A)the same height h
B)about 1.36h
C)less than one tenth h
D)more than ten times h

Question 34

A U-tube is partially filled with water and then an immiscible liquid is added to the right side.The top of the liquid is a distance h₁ = 2.40 cm above the level of interface between the liquid and water.On the left side of the tube the top of the water is a distance h₂ = 1.48 cm above the liquid-water interface on the right side.What is the density of the liquid in terms of the density of water,1 000 kg/m³?

A)1 620 kg/m³
B)617 kg/m³
C)622 kg/m³
D)237 kg/m³

Question 35

The water behind Grand Coulee Dam is 1 000 m wide and 200 m deep.Find the hydrostatic force on the back of the dam.(Hint: the total force = average pressure × area)

A)3.92E+11 N
B)2.26E+11 N
C)1.96E+11 N
D)1.66E+11 N
E)​1.18E+9 N

Question 36

The bottom of a flat-bottomed aluminum boat has an area of 4.20 m² and the boat's mass is 63.0 kg.When set afloat in water,how far below the water surface is the boat bottom? (water density = 1.00 × 10³ kg/m³)

A)15.0 m
B)0.0150 m
C)0.115 m
D)0.265 m
E)0.0250 m

Question 37

A reading of a tire gauge tells you that the gauge pressure in a tire is 31 lb/in².What is the absolute pressure in the tire? Assume that atmospheric pressure is 14 lb/in².

A)17 lb/in²
B)59 lb/in²
C)45 lb/in²
D)You can't be sure since you may have nitrogen-filled tires.

Question 38

A solid rock,suspended in air by a spring scale,has a measured mass of 8.50 kg.When the rock is submerged in water,the scale reads 4.00 kg.What is the density of the rock? (water density = 1 000 kg/m³)

A)6.8E+2 kg/m³
B)8.9E+2 kg/m³
C)3.2E+2 kg/m³
D)1.9E+3 kg/m³
E)​1.9E+6 kg/m³

Question 39

Atmospheric pressure is 1.00 × 10⁵ N/m²,and the density of air is 1.29 kg/m³.If the density of air is constant as you get higher and higher,calculate the height of the atmosphere needed to produce this pressure.

A)1 260 m
B)77 000 m
C)7 900 m
D)10 300 m

Question 40

Why do vapor bubbles get larger in boiling water as they approach the surface?

A)They only appear to get larger,this being a magnification effect due to looking through the water.
B)The bubbles' pressure increases as they rise.
C)The pressure in the water decreases as the bubble moves toward the surface.
D)Bubbles always get bigger after they form.

Question 41

Water (density = 1.00 × 10³ kg/m³)flows at 7.2 m/s through a pipe with radius 0.025 m.The pipe goes up to the second floor of the building,2.00 m higher,and the pressure remains unchanged.What is the radius of the pipe on the second floor?

A)0.019 m
B)0.036 m
C)0.0013 m
D)0.23 m
E)0.022 m

Question 42

A block of wood has specific gravity 0.80.When placed in water,what percent of the volume of the wood is above the surface?

A)0,the block sinks.
B)20%
C)80%
D)50%
E)100%

Question 43

Water pressurized to 3.00 × 10⁵ Pa is flowing at 5.25 m/s in a pipe which contracts to 1/2 of its former area.What are the pressure and speed of the water after the contraction? (Density of water = 1 × 10³ kg/m³. )

A)2.59E+5 Pa,10.5 m/s
B)3.00E+5 Pa,2.63 m/s
C)3.00E+5 Pa,10.5 m/s
D)4.59E+5 Pa,10.5 m/s
E)2.59E+5 Pa,2.63 m/s

Question 44

It takes 4.00 minutes to fill a gas tank with 50.0 liters of gasoline.If the pump nozzle is 1.35 cm in radius,what is the average speed of the gasoline as it leaves the nozzle? (1 000 liters = one cubic meter)

A)3.64 m/s
B)0.364 m/s
C)21.8 m/s
D)1.36 m/s
E)12.5 m/s

Question 45

A Venturi tube may be used as the inlet to an automobile carburetor.If the inlet pipe of 2.00 cm diameter narrows to 1.00 cm diameter,what is the pressure drop in the constricted section for airflow of 2.16 m/s in the 2.00-cm section? (Assume air density is 1.25 kg/m³. )

A)11.7 Pa
B)43.7 Pa
C)45.7 Pa
D)20.3 Pa
E)87.5 Pa

Question 46

An ideal fluid,of density 850 kg/m³,flows at 0.560 kg/s through a pipe of radius 0.0250 m.What is the fluid speed?

A)0.773 m/s
B)0.00419 m/s
C)285 m/s
D)0.336 m/s
E)0.599 m/s

Question 47

A heavily loaded boat is floating in a pond.The boat sinks because of a leak.What happens to the surface level of the pond?

A)It stays the same.
B)It goes up.
C)It goes down.
D)More information is needed to reach a conclusion.

Question 48

The equation of continuity applied to an incompressible ideal fluid flowing through a pipe of varying diameter is based on what of the following being conserved for the fluid in the pipe?

A)its kinetic energy
B)its momentum
C)its flow rate
D)its potential energy

Question 49

A heavily loaded boat is floating in a pond.The boat starts to sink because of a leak but quick action plugging the leak stops the boat from going under although it is now deeper in the water.What happens to the surface level of the pond?

A)It stays the same.
B)It goes up.
C)It goes down.
D)More information is needed to reach a conclusion.

Question 50

A syringe has an inside radius of its barrel of 0.50 cm and at the opening at the end of the needle the radius is 1.0 mm.If a force F is applied to the plunger,what is the force produced at the opening of the needle?

A)5F
B)25F
C)F/5
D)F/25

Question 51

Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.25 cm.If the nozzle has an opening of diameter 1.30 cm,and if the water leaves the nozzle at a speed of 14.0 m/s,what is the speed of the water inside the hose?

A)4.67 m/s
B)41.9 m/s
C)2.38 m/s
D)5.67 m/s
E)also 14.0 m/s

Question 52

The flow rate of a liquid through a 4.0-cm-radius pipe is 0.0080 m³/s.The average fluid speed in the pipe is

A)0.040 m/s.
B)0.0050 m/s.
C)0.16 m/s.
D)1.6 m/s.
E)16 m/s.

Question 53

A blimp is filled with 440 m³ of helium.How big a payload can the balloon lift? (The density of air is 1.29 kg/m³;the density of helium is 0.178 kg/m³. )

A)396 kg
B)568 kg
C)78.3 kg
D)489 kg
E)646 kg

Question 54

Water (density = 1.00 × 10³ kg/m³)flows at 15.0 m/s through a pipe with radius 0.0400 m.The pipe goes up to the second floor of the building,2.50 m higher,and the pressure remains unchanged.What is the speed of the water flow in the pipe on the second floor?

A)13.3 m/s
B)16.6 m/s
C)176 m/s
D)14.2 m/s
E)6.63 m/s

Question 55

A hole is poked through the metal side of a drum holding water.The hole is 16.0 cm below the water surface.What is the initial speed of outflow?

A)1.77 m/s
B)17.7 m/s
C)0.566 m/s
D)3.14 m/s
E)1.25 m/s

Question 56

An ideal fluid flows through a pipe made of two sections with diameters of 1.0 and 4.0 inches,respectively.The speed of the fluid flow through the 4.0-inch section will be what factor times that through the 1.0-inch section?

A)16
B)8
C)15
D)
E)​

Question 57

An ideal fluid,of density 900 kg/m³,flows at 4.80 m/s through a level pipe with radius of 0.22 cm.The pressure in the fluid is 1.3 × 10⁵ N/m².This pipe connects to a second level pipe,with radius of 0.72 cm.Find the speed of flow in the second pipe.

A)51 m/s
B)1.5 m/s
C)0.45 m/s
D)16 m/s
E)4.9 m/s

Question 58

Think of Bernoulli's equation as it pertains to an ideal fluid flowing through a horizontal pipe.Imagine that you take measurements along the pipe in the direction of fluid flow.What happens to the sum of the pressure and energy per unit volume?

A)It increases as the pipe diameter increases.
B)It decreases as the pipe diameter increases.
C)It remains constant as the pipe diameter increases.
D)No choices above are valid.

Question 59

A large stone is resting on the bottom of the swimming pool.The normal force of the bottom of the pool on the stone is equal to the

A)weight of the stone.
B)weight of the water displaced.
C)sum of the weight of the stone and the weight of the displaced water.
D)difference between the weight of the stone and the weight of the displaced water.

Question 60

Water comes down the spillway of a dam from an initial vertical height of 170 m.What is the highest possible speed of the water at the end of the spillway?

A)5.89 m/s
B)18.4 m/s
C)57.7 m/s
D)1 670 m/s
E)3 330 m/s

Question 61

How much air must be pushed downward at 40.0 m/s to keep an 830-kg helicopter aloft?

A)20.8 kg/s
B)203 kg/s
C)33 200 kg/s
D)208 kg/s
E)193 kg/s

Question 62

A pipe of diameter three cm is replaced by one of the same length but of diameter six cm.If the pressure difference between the ends of the pipe remains the same,by what factor is the rate of flow of a viscous liquid through it changed?

A)2
B)4
C)8
D)16
E)32

Question 63

In addition to its weight,what force is needed to lift a wire ring of radius 2.0 cm from the surface of blood plasma? The surface tension of blood plasma is 7.3 × 10¯² N/m.

A)1.8E+1 N
B)3.7E-2 N
C)9.2E-3 N
D)1.8E-2 N

Question 64

A fluid is drawn up through a tube as shown in the figure.If the height difference from the top of the tank to the bottom of the siphon is H = 1.40 m,then what is the outflow speed? Assume the pressure is the same at the top of the tank and at the siphon outlet.
​

A)3.70 m/s
B)27.4 m/s
C)5.24 m/s
D)6.86 m/s

Question 65

Spherical particles of density 1.8 g/cm³ are shaken in a container of water (viscosity = 1.0 × 10−³ N⋅s/m³).The water is 9.0 cm deep and is allowed to stand for 30 minutes.What is the radius of the largest particles still in suspension at that time?

A)2.5E-6 m
B)6.4E-6 m
C)5.4E-6 m
D)1.8E-6 m
E)4.1E-6 m

Question 66

A centrifuge rotates at 100 rev/s (i.e. ,628 rad/s).If the test tube places the suspension at 8.00 cm from the axis of rotation,by what factor are the terminal speeds of the settling particles increased as compared to sedimentation cause by gravity?

A)3.2E+3
B)3.2E+5
C)3.2E+4
D)5.0E+3
E)​4.2E+3

Question 67

Water is sent from a fire hose at 34.5 m/s at an angle of 30.0° above the horizontal.What is the maximum height reached by the water,assuming the fire hose is level with the ground?

A)7.59 m
B)15.2 m
C)30.4 m
D)300 m
E)60.7 m

Question 68

A fluid has a density of 1 040 kg/m³.If it rises to a height of 1.60 cm in a 1.50-mm diameter capillary tube,what is the surface tension of the liquid? Assume a contact angle of zero.

A)0.0612 N/m
B)0.122 N/m
C)6.12 N/m
D)0.245 N/m
E)12.2 N/m

Question 69

The SI units for viscosity are N·s/m².Another commonly used unit for viscosity is the poise,where 10 poise = 1 N·s/m².The poise is a fairly large unit,and it is more common to use the centipoise.Which of the following is equal to the centipoise?

A)10−³ N·s/m²
B)10−² N·s/m²
C)10−¹ N·s/m²
D)10² N·s/m²

Question 70

How much power is theoretically available from a mass flow of 1 000 kg/s of water that falls a vertical distance of 120 m?

A)1.18E+6 kW
B)1.20E+5 kW
C)1.18E+3 W
D)8.17E+1 W
E)1.18E+6 W

Question 71

A jet of water flowing from a hose at 18 m/s is directed against a wall.If the mass flow in the fluid stream is 2.0 kg/s,what force is the water applying to the wall if backsplash is negligible?

A)36 N
B)0.11 N
C)38 N
D)350 N
E)34 N

Question 72

In order to overcome a surface tension of a fluid,a force of 1.35 × 10−² N is required to lift a wire ring of circumference 13.0 cm.What is the surface tension of the fluid?

A)0.052 N/m
B)0.104 N/m
C)0.552 N/m
D)5.19 N/m
E)17.6 N/m

Question 73

Spherical particles of density 2.0 g/cm³ are shaken in a container of water (viscosity = 1.0 × 10−³ N⋅s/m³).The water is 9.0 cm deep and is allowed to stand for 25 minutes.What is the greatest terminal velocity of the particles still in suspension at that time?​

A)3.0E-5 m/s
B)4.5E-5 m/s
C)7.5E-5 m/s
D)6.0E-5 m/s
E)​8.4E-5 m/s

Question 74

A pipe carrying water has a radius of 1.0 cm.If the flow velocity is 9.0 cm/s,which of the following characterizes the flow? Take the viscosity of water to be 1.0 × 10−³ N⋅s/m.

A)stagnant
B)unstable
C)turbulent
D)streamlined

Question 75

Air pressure is 1.00 × 10⁵ N/m²,air density is 1.30 kg/m³,and the density of soft drinks is 1.00 × 10³ kg/m³.If one blows carefully across the top of a straw sticking up 0.10 m from the liquid in a soft drink can,it is possible to make the soft drink rise half way up the straw and stay there.How fast must the air be blown across the top of the straw?

A)0.036 m/s
B)27 m/s
C)1.4 m/s
D)19 m/s
E)750 m/s

Question 76

The flow rate of blood through the average human aorta,of radius 0.95 cm,is about 90 cm³/s.What is the speed of the blood flow through the aorta?

A)14 cm/s
B)32 cm/s.
C)37 cm/s
D)32 cm/s

Question 77

​A water pipe with inner radius r₁ is connected to a junction with two equal-diameter pipes.Water flows through each of the two pipes with a speed of v.If the diameter of each of the two pipes is ¼ the diameter of the single pipe,what is the flow rate in the single pipe?

A)​v/8
B)​​v​/4
C)​4​v
D)​8​v

Question 78

The fluid to which Bernoulli's equation is applied is based on what being conserved for the fluid?

A)its momentum
B)its potential energy
C)its kinetic energy
D)its total mechanical energy

Question 79

When an artery gets a constricted region due to plaque,how does the pressure in this region compare to the pressure in an unconstricted region adjacent?

A)Since this is a closed system,the pressure is the same in both regions.
B)In the constricted region the blood moves at a higher speed than in the unconstricted region resulting in an increased pressure.
C)In the constricted region the blood moves at a higher speed than in the unconstricted region resulting in a decreased pressure.
D)In the constricted region the blood moves at a lower speed than in the unconstricted region resulting in an increased pressure.

Question 80

The condition for onset of turbulent flow is that the Reynolds Number reaches what value?

A)1 000
B)2 000
C)3 000
D)4 000