Cities across the U.S. supply fresh water to the residents at constant pressure by the use of water towers. If the diameter, d2, of the pipe coming out of the tower is 25 cm, and the diameter, d1, of the pipe at your home is 2.0 cm, what is the ratio of the velocity of the water at d1 compared to d2? Assume that all the taps are off except yours.

A) 12.5 B) 156 C) 0.0064 D) 0.08 E) 25 A) 12.5 B) 156 C) 0.0064 D) 0.08 E) 25 B

A smooth stone is falling with its constant terminal velocity in a viscous liquid. The density of the stone is 2.89 $\times$ 103 kg/m3, and the density of the liquid is 1.34 $\times$ 103 kg/m3. The volume of the stone is 2.15 $\times$ 10-6 m3. The drag force F of the liquid on the stone is given by F = 3.52v in SI units, where v is the terminal velocity. The value of v is

A) 8.5 $\times$ 10-3 m/s B) 1.1 $\times$ 10-2 m/s C) 3.2 $\times$ 10-2 m/s D) 1.7 $\times$ 10-2 m/s E) 1.7 $\times$ 10-3 m/s A) 8.5 $\times$ 10-3 m/s B) 1.1 $\times$ 10-2 m/s C) 3.2 $\times$ 10-2 m/s D) 1.7 $\times$ 10-2 m/s E) 1.7 $\times$ 10-3 m/s

A ball bearing that has a density of 5.16 g/cm3 is held at rest under the surface of a liquid that has a density of 2.50 g/cm3. The magnitude of the acceleration of the ball bearing just after it is released is

A) 5.0 m/s2 B) 14 m/s2 C) 10 m/s2 D) 6.5 m/s2 E) 1.6 m/s2 A) 5.0 m/s2 B) 14 m/s2 C) 10 m/s2 D) 6.5 m/s2 E) 1.6 m/s2

A uniform cylinder of wood of length 25 cm is floating vertically upright in a dual layered fluid. An oil layer (of density 0.9 g/cm3) that is 9 cm deep lies above a depth of water. If only 5 cm of wood lies above the oil surface calculate the density of the wood.

A) 0.76 g/ cm3 B) 0.80 g/ cm3 C) 0.70 g/ cm3 D) 0.66 g/ cm3 E) none of the above A) 0.76 g/ cm3 B) 0.80 g/ cm3 C) 0.70 g/ cm3 D) 0.66 g/ cm3 E) none of the above

Exam 13: Fluids

A pump is used to circulate SAE 10W oil at 30^$\circ$C in an engine. What is the minimum pressure the pump must provide if it is to achieve a flow rate of 1L/s along a tube that is 1 m long with an inner diameter of 2 cm?

Free

(Multiple Choice)

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Question 1

Correct Answer:

Verified

Which of the following are the SI units for specific gravity?

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(Multiple Choice)

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Question 2

Correct Answer:

Verified

Cities across the U.S. supply fresh water to the residents at constant pressure by the use of water towers. If the diameter, d₂, of the pipe coming out of the tower is 25 cm, and the diameter, d₁, of the pipe at your home is 2.0 cm, what is the ratio of the velocity of the water at d₁ compared to d₂? Assume that all the taps are off except yours.

Free

(Multiple Choice)

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(38)

Question 3

Correct Answer:

Verified

Water is discharged from the tank in the manner shown. At which point is the pressure the least?

(Multiple Choice)

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Question 4

A tank is filled with water to a height H. A small hole is punched in one of the walls at a depth h below the water's surface. The water leaves the hole in a horizontal direction. The stream of water strikes the floor at a distance x, as shown. Neglecting viscosity, you can calculate the value of x from

(Multiple Choice)

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Question 5

Two identical beakers are filled with the same amount of water. A ball of mass m is placed in the first beaker so that it floats on the surface while a second identical ball is placed in the second beaker but tied with a string of negligible mass so that the ball is completely submerged. Each beaker is then placed on a scale. Which scale has a higher reading?

(Multiple Choice)

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Question 6

A pipe that appears to be of uniform size has constrictions on the inside. When a liquid flows through the pipe, the pressures at various points are indicated by the heights of the columns in the manometer tubes. If fluid friction is negligible, at which point is the diameter greatest?

(Multiple Choice)

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Question 7

According to Pascal's principle, the pressure at every point in a confined liquid

(Multiple Choice)

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Question 8

A piece of wood is floating at the surface of some water as illustrated. The wood has a circular cross section and a height h = 3.0 cm. The density of the wood is 0.41 g/cm³. The distance y from the surface of the water to the bottom of the wood is

(Multiple Choice)

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Question 9

A hurricane strength wind is blowing at a speed of 100 km/hr over a flat roof of 100 m². Assuming the inside of the house to be at 1 atm pressure and the density of air is 1.3 kg/m³, calculate the pressure difference between the inside and the outside of the roof.

(Multiple Choice)

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Question 10

An incompressible fluid is in streamline flow through a Venturi meter, as shown. In the graph, one of the curves is a calibration curve for the meter, showing the fluid velocity plotted against the gauge reading. Which curve best represents the calibration data?

(Multiple Choice)

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Question 11

A pump is used to circulate oil in an engine. If the diameter of the tube connecting the pump to the engine is increase by a factor of 2, the resulting pressure drop at the end of the tube changes by a factor of

(Multiple Choice)

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Question 12

A hypodermic needle can be thought of as a large area pipe leading to a small area pipe that opens into the vein. The diameter of the plunger is 1.2 cm and the needle diameter is 0.15 cm. If the gauge pressure in the vein is 25 mmHg, what minimum force is needed on the plunger in order for a fluid flow into the vein to occur?

(Multiple Choice)

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Question 13

One statement of Bernoulli's law is At any two points along a pipe in which there is a liquid in steady flow, the sum of the pressure, the kinetic energy per unit volume, and the potential energy per unit volume has the same value. For this statement to be true, it is not necessary to have

(Multiple Choice)

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Question 14

A smooth stone is falling with its constant terminal velocity in a viscous liquid. The density of the stone is 2.89 $\times$ 10³ kg/m³, and the density of the liquid is 1.34 $\times$ 10³ kg/m³. The volume of the stone is 2.15 $\times$ 10^-6 m³. The drag force F of the liquid on the stone is given by F = 3.52v in SI units, where v is the terminal velocity. The value of v is

(Multiple Choice)

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Question 15

Water flows at speed v in a pipe of radius r. Neglecting viscosity, at what speed does the water flow through a constriction in which the radius of the pipe is r/3?

(Multiple Choice)

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Question 16

A ball bearing that has a density of 5.16 g/cm³ is held at rest under the surface of a liquid that has a density of 2.50 g/cm³. The magnitude of the acceleration of the ball bearing just after it is released is

(Multiple Choice)

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Question 17

A uniform cylinder of wood of length 25 cm is floating vertically upright in a dual layered fluid. An oil layer (of density 0.9 g/cm³) that is 9 cm deep lies above a depth of water. If only 5 cm of wood lies above the oil surface calculate the density of the wood.

(Multiple Choice)

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Question 18

The drag force on a plane is proportional to the density of the air. By what factor does the drag force change if a plane goes from an altitude 5.5 km to 11 km? The atmospheric pressure goes from to atm in going from 5.5 km to 11 km. Assume that the plane is at level flight and flies at the same speed.

(Multiple Choice)

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Question 19

A liquid, such as water, with a low but not negligible viscosity is flowing from A to C with no turbulence through the horizontal tube, as shown in the figure. The cross-sectional area at A is equal to that at C. Which of the following is observed?

(Multiple Choice)

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Question 20

Showing 1 - 20 of 91

A pump is used to circulate SAE 10W oil at 30^$\circ$C in an engine. What is the minimum pressure the pump must provide if it is to achieve a flow rate of 1L/s along a tube that is 1 m long with an inner diameter of 2 cm?

Which of the following are the SI units for specific gravity?

Water is discharged from the tank in the manner shown. At which point is the pressure the least?

A pipe that appears to be of uniform size has constrictions on the inside. When a liquid flows through the pipe, the pressures at various points are indicated by the heights of the columns in the manometer tubes. If fluid friction is negligible, at which point is the diameter greatest?

According to Pascal's principle, the pressure at every point in a confined liquid

A piece of wood is floating at the surface of some water as illustrated. The wood has a circular cross section and a height h = 3.0 cm. The density of the wood is 0.41 g/cm³. The distance y from the surface of the water to the bottom of the wood is

A hurricane strength wind is blowing at a speed of 100 km/hr over a flat roof of 100 m². Assuming the inside of the house to be at 1 atm pressure and the density of air is 1.3 kg/m³, calculate the pressure difference between the inside and the outside of the roof.

An incompressible fluid is in streamline flow through a Venturi meter, as shown. In the graph, one of the curves is a calibration curve for the meter, showing the fluid velocity plotted against the gauge reading. Which curve best represents the calibration data?

A pump is used to circulate oil in an engine. If the diameter of the tube connecting the pump to the engine is increase by a factor of 2, the resulting pressure drop at the end of the tube changes by a factor of

One statement of Bernoulli's law is At any two points along a pipe in which there is a liquid in steady flow, the sum of the pressure, the kinetic energy per unit volume, and the potential energy per unit volume has the same value. For this statement to be true, it is not necessary to have

Water flows at speed v in a pipe of radius r. Neglecting viscosity, at what speed does the water flow through a constriction in which the radius of the pipe is r/3?

A ball bearing that has a density of 5.16 g/cm³ is held at rest under the surface of a liquid that has a density of 2.50 g/cm³. The magnitude of the acceleration of the ball bearing just after it is released is

A uniform cylinder of wood of length 25 cm is floating vertically upright in a dual layered fluid. An oil layer (of density 0.9 g/cm³) that is 9 cm deep lies above a depth of water. If only 5 cm of wood lies above the oil surface calculate the density of the wood.

A liquid, such as water, with a low but not negligible viscosity is flowing from A to C with no turbulence through the horizontal tube, as shown in the figure. The cross-sectional area at A is equal to that at C. Which of the following is observed?

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Exam 13: Fluids

A pump is used to circulate SAE 10W oil at 30 ∘\circ∘ C in an engine. What is the minimum pressure the pump must provide if it is to achieve a flow rate of 1L/s along a tube that is 1 m long with an inner diameter of 2 cm?

Which of the following are the SI units for specific gravity?

Water is discharged from the tank in the manner shown. At which point is the pressure the least?

A pipe that appears to be of uniform size has constrictions on the inside. When a liquid flows through the pipe, the pressures at various points are indicated by the heights of the columns in the manometer tubes. If fluid friction is negligible, at which point is the diameter greatest?

According to Pascal's principle, the pressure at every point in a confined liquid

A piece of wood is floating at the surface of some water as illustrated. The wood has a circular cross section and a height h = 3.0 cm. The density of the wood is 0.41 g/cm3. The distance y from the surface of the water to the bottom of the wood is

A hurricane strength wind is blowing at a speed of 100 km/hr over a flat roof of 100 m2. Assuming the inside of the house to be at 1 atm pressure and the density of air is 1.3 kg/m3, calculate the pressure difference between the inside and the outside of the roof.

An incompressible fluid is in streamline flow through a Venturi meter, as shown. In the graph, one of the curves is a calibration curve for the meter, showing the fluid velocity plotted against the gauge reading. Which curve best represents the calibration data?

A pump is used to circulate oil in an engine. If the diameter of the tube connecting the pump to the engine is increase by a factor of 2, the resulting pressure drop at the end of the tube changes by a factor of

One statement of Bernoulli's law is At any two points along a pipe in which there is a liquid in steady flow, the sum of the pressure, the kinetic energy per unit volume, and the potential energy per unit volume has the same value. For this statement to be true, it is not necessary to have

Water flows at speed v in a pipe of radius r. Neglecting viscosity, at what speed does the water flow through a constriction in which the radius of the pipe is r/3?

A ball bearing that has a density of 5.16 g/cm3 is held at rest under the surface of a liquid that has a density of 2.50 g/cm3. The magnitude of the acceleration of the ball bearing just after it is released is

A uniform cylinder of wood of length 25 cm is floating vertically upright in a dual layered fluid. An oil layer (of density 0.9 g/cm3) that is 9 cm deep lies above a depth of water. If only 5 cm of wood lies above the oil surface calculate the density of the wood.

A liquid, such as water, with a low but not negligible viscosity is flowing from A to C with no turbulence through the horizontal tube, as shown in the figure. The cross-sectional area at A is equal to that at C. Which of the following is observed?

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

A pump is used to circulate SAE 10W oil at 30^$\circ$C in an engine. What is the minimum pressure the pump must provide if it is to achieve a flow rate of 1L/s along a tube that is 1 m long with an inner diameter of 2 cm?

A piece of wood is floating at the surface of some water as illustrated. The wood has a circular cross section and a height h = 3.0 cm. The density of the wood is 0.41 g/cm³. The distance y from the surface of the water to the bottom of the wood is

A hurricane strength wind is blowing at a speed of 100 km/hr over a flat roof of 100 m². Assuming the inside of the house to be at 1 atm pressure and the density of air is 1.3 kg/m³, calculate the pressure difference between the inside and the outside of the roof.

A ball bearing that has a density of 5.16 g/cm³ is held at rest under the surface of a liquid that has a density of 2.50 g/cm³. The magnitude of the acceleration of the ball bearing just after it is released is

A uniform cylinder of wood of length 25 cm is floating vertically upright in a dual layered fluid. An oil layer (of density 0.9 g/cm³) that is 9 cm deep lies above a depth of water. If only 5 cm of wood lies above the oil surface calculate the density of the wood.