Exam 9: Fluids

Water is flowing through a pipe with a constriction.The diameter of the narrow section is one-third the diameter of the wide section.If the velocity of the incompressible fluid is 3.6 m/s in the narrow section,then what is the velocity of the fluid in the wide section?

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Question 1

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A 1.5 kg ball is floating in water.The volume displaced by the ball is

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Question 2

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A hydraulic lift has a small piston with a diameter 5.0 cm piston and the large piston with a diameter of 25 cm.What force must be applied on the small piston in order to lift a car on the large piston that weighs 13,000 N?

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Question 3

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A submarine is located 2.000 km below the surface of the water.What is the absolute pressure of the seawater on the outside of the submarine? (density of seawater is 1,025 kg/m³)

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Question 4

Water with a density of 1,000 kg/m³ flows through a 4.00 cm diameter pipe with a velocity of 1.20 m/s.What is the mass flow rate?

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Question 5

A viscous fluid is flowing through a small tube at a rate of 0.400 m³/s.If the pressure difference between one end of the tube and the other is tripled,the length is doubled and the radius is also doubled,then what is the rate of flow of the fluid?

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Question 6

A mercury manometer measures a pressure of 200 mmHg.What is this pressure in atm?

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Question 7

A submarine is at a depth of 500 m under the water.The force on a circular hatch of 1.00 m in diameter due to the seawater (density = 1,025 kg/m³) pressure from outside the submarine is

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Question 8

An incompressible fluid is flowing through a vertical pipe with a constriction.The wide section is 2.00 cm in diameter and is at the top of the pipe.The pressure of the fluid in the wide section at the top is 200 kPa.The velocity of the fluid in the wide section is 4.00 m/s.The narrow section is located 8.00 m below the wide section.What is the diameter of the narrow section for the pressure of the fluid in the narrow section to equal the pressure in the wide section? (density of the fluid is 680 kg/m³)

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Question 9

An incompressible fluid is flowing through a vertical pipe with a constriction.The wide section is 2.00 cm in diameter and is at the top of the pipe.The pressure of the fluid in the wide section at the top is 200 kPa.The velocity of the fluid in the wide section is 4.00 m/s.The narrow section is located 4.00 m below the wide section.What is the diameter of the narrow section for the pressure of the fluid in the narrow section to equal the pressure in the wide section? (density of the fluid is 1000 kg/m³)

(Multiple Choice)

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Question 10

An incompressible fluid is flowing through a horizontal pipe with a constriction.The velocity of the fluid in the wide section of the pipe is 5.00 m/s.The diameter of the wide section is 10.0 cm and the diameter of the narrow section is 8.00 cm.The pressure of the fluid in the wide section is 200 kPa.What is the pressure in the narrow section of the pipe? (density of the fluid is 680 kg/m³)

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Question 11

The foot pedal on hydraulic brake system exerts a force of 45 lbs on a piston with a diameter of 1.00 cm.The brake fluid in the brake system exerts the pressure from the foot pedal on a brake pad piston with a diameter of 2.50 cm.The force on the brake pad is

(Multiple Choice)

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Question 12

A small hole is cut in the bottom of a water storage tank.The initial depth of the water is 12.00 m.If the diameter of the small hole in the bottom of the tank is 4.00 mm,then what is the flow rate of the water leaving the tank?

(Multiple Choice)

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Question 13

A baseball (0.145 kg,circumference 229 mm)is held completely under sea water (density,1017 kg/m³)by the application of what force?

(Multiple Choice)

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Question 14

An incompressible fluid is flowing through a pipe with a constriction.The pipe is on an incline with an angle of 20.0 degrees.The narrow section is 15.0 m from the wide section and the narrow section is lower than the wide section.The velocity of the fluid in the wide section of the pipe is 6.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s.The pressure of the fluid in the wide section is 250 kPa.What is the pressure in the narrow section of the pipe? (density of the fluid is 1,000 kg/m³)

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Question 15

Two cylinders,one made of lead (density 11340 kg/m³) and one of copper (density 8940 kg/m³),have the same radius and height.When thrown into a pool of water (density 1000 kg/m³),as the two are sinking to the bottom,describe the buoyant forces on the cylinders.

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Question 16

A mercury manometer measures a pressure of 150 mmHg.What is this pressure in kPa?

(Multiple Choice)

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Question 17

The difference in blood pressure between the head and the foot of a person who is 2.000 m tall and standing up is (density of blood is 1,060 kg/m³)

(Multiple Choice)

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Question 18

An incompressible fluid is flowing through a pipe with a constriction.The pipe is on an incline with an angle of 30.0 degrees.The narrow section is 15.0 m from the wide section and the narrow section is lower than the wide section.The velocity of the fluid in the wide section of the pipe is 4.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s.The pressure of the fluid in the wide section is 250 kPa.What is the pressure in the narrow section of the pipe? (density of the fluid is 1,000 kg/m³)

(Multiple Choice)

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Question 19

A viscous fluid is flowing through a small tube at a rate of 2.00 $\times$ 10^-4 m³/s.If the pressure difference between one end of the tube and the other is doubled and the radius is also doubled,then what is the rate of flow of the fluid?

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Question 20

Showing 1 - 20 of 87

Water is flowing through a pipe with a constriction.The diameter of the narrow section is one-third the diameter of the wide section.If the velocity of the incompressible fluid is 3.6 m/s in the narrow section,then what is the velocity of the fluid in the wide section?

A 1.5 kg ball is floating in water.The volume displaced by the ball is

A hydraulic lift has a small piston with a diameter 5.0 cm piston and the large piston with a diameter of 25 cm.What force must be applied on the small piston in order to lift a car on the large piston that weighs 13,000 N?

A submarine is located 2.000 km below the surface of the water.What is the absolute pressure of the seawater on the outside of the submarine? (density of seawater is 1,025 kg/m3)

Water with a density of 1,000 kg/m3 flows through a 4.00 cm diameter pipe with a velocity of 1.20 m/s.What is the mass flow rate?

A viscous fluid is flowing through a small tube at a rate of 0.400 m3/s.If the pressure difference between one end of the tube and the other is tripled,the length is doubled and the radius is also doubled,then what is the rate of flow of the fluid?

A mercury manometer measures a pressure of 200 mmHg.What is this pressure in atm?

A submarine is at a depth of 500 m under the water.The force on a circular hatch of 1.00 m in diameter due to the seawater (density = 1,025 kg/m3) pressure from outside the submarine is

The foot pedal on hydraulic brake system exerts a force of 45 lbs on a piston with a diameter of 1.00 cm.The brake fluid in the brake system exerts the pressure from the foot pedal on a brake pad piston with a diameter of 2.50 cm.The force on the brake pad is

A small hole is cut in the bottom of a water storage tank.The initial depth of the water is 12.00 m.If the diameter of the small hole in the bottom of the tank is 4.00 mm,then what is the flow rate of the water leaving the tank?

A baseball (0.145 kg,circumference 229 mm)is held completely under sea water (density,1017 kg/m3)by the application of what force?

Two cylinders,one made of lead (density 11340 kg/m3) and one of copper (density 8940 kg/m3),have the same radius and height.When thrown into a pool of water (density 1000 kg/m3),as the two are sinking to the bottom,describe the buoyant forces on the cylinders.

A mercury manometer measures a pressure of 150 mmHg.What is this pressure in kPa?

The difference in blood pressure between the head and the foot of a person who is 2.000 m tall and standing up is (density of blood is 1,060 kg/m3)

A viscous fluid is flowing through a small tube at a rate of 2.00 ×\times× 10-4 m3/s.If the pressure difference between one end of the tube and the other is doubled and the radius is also doubled,then what is the rate of flow of the fluid?

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A submarine is located 2.000 km below the surface of the water.What is the absolute pressure of the seawater on the outside of the submarine? (density of seawater is 1,025 kg/m³)

Water with a density of 1,000 kg/m³ flows through a 4.00 cm diameter pipe with a velocity of 1.20 m/s.What is the mass flow rate?

A viscous fluid is flowing through a small tube at a rate of 0.400 m³/s.If the pressure difference between one end of the tube and the other is tripled,the length is doubled and the radius is also doubled,then what is the rate of flow of the fluid?

A submarine is at a depth of 500 m under the water.The force on a circular hatch of 1.00 m in diameter due to the seawater (density = 1,025 kg/m³) pressure from outside the submarine is

A baseball (0.145 kg,circumference 229 mm)is held completely under sea water (density,1017 kg/m³)by the application of what force?

Two cylinders,one made of lead (density 11340 kg/m³) and one of copper (density 8940 kg/m³),have the same radius and height.When thrown into a pool of water (density 1000 kg/m³),as the two are sinking to the bottom,describe the buoyant forces on the cylinders.

The difference in blood pressure between the head and the foot of a person who is 2.000 m tall and standing up is (density of blood is 1,060 kg/m³)

A viscous fluid is flowing through a small tube at a rate of 2.00 $\times$ 10^-4 m³/s.If the pressure difference between one end of the tube and the other is doubled and the radius is also doubled,then what is the rate of flow of the fluid?