The density of mercury is 1.36 × 104 kg/m3.What is the mass of a 2.16 × 10-4-m3 sample of mercury?

A) 0.0343 kg B) 0.002 94 kg C) 2.94 kg D) 5.44 kg E) 6.29 kg A) 0.0343 kg B) 0.002 94 kg C) 2.94 kg D) 5.44 kg E) 6.29 kg

The density of gold is 19 300 kg/m3.What is the mass of a gold sphere whose diameter is 0.25 m?

A) 87.5 kg B) 158 kg C) 947 kg D) 1260 kg E) 3790 kg A) 87.5 kg B) 158 kg C) 947 kg D) 1260 kg E) 3790 kg

Exam 11: Fluids

Water enters a pipe of diameter 3.0 cm with a velocity of 3.0 m/s.The water encounters a constriction where its velocity is 15 m/s.What is the diameter of the constricted portion of the pipe?

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Question 1

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In a car lift, compressed air with a gauge pressure of 4.0 × 10⁵ Pa is used to raise a piston with a circular cross-sectional area.If the radius of the piston is 0.17 m, what is the maximum mass that can be raised using this piston?

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Question 2

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A horizontal piping system that delivers a constant flow of water is constructed from pipes with different diameters as shown in the figure.At which of the labeled points is the water in the pipe under the greatest pressure? The drawing is a view from above the pipe.

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Question 3

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After a moving van drives onto a river ferry, the ferry sinks 0.0367 m.The length and width of the ferry are 15.24 m and 6.10 m, respectfully.Determine the weight of the moving van.

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Question 4

Elaine went to her outside faucet to fill a 0.0189-m³ bucket with water to wash her car.Water exits with a speed of 0.61 m/s.The radius of the faucet is 0.0078 m.How long does it take to fill the bucket completely?

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Question 5

An ice cube $\rho$ = 917 kg/m³, is sliding down a frictionless incline as shown in the drawing.The sides of the cube each have a length of 0.75 m.What pressure does the cube exert on the incline? $An ice cube \rho = 917 kg/m<sup>3</sup>, is sliding down a frictionless incline as shown in the drawing.The sides of the cube each have a length of 0.75 m.What pressure does the cube exert on the incline?$

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Question 6

A 2-kg block displaces 10 kg of water when it is held fully immersed.The object is then tied down as shown in the figure; and it displaces 5 kg of water.What is the tension in the string?

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Question 7

A pirate's treasure chest lies 20.0 m below the surface of the ocean.What is the magnitude of the force that acts on the rectangular top that is 0.750 m × 0.425 m?

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Question 8

Which one of the following statements is false concerning the derivation or usage of Bernoulli's equation?

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Question 9

The density of mercury is 1.36 × 10⁴ kg/m³.What is the mass of a 2.16 × 10^-⁴-m³ sample of mercury?

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Question 10

A barometer is taken from the base to the top of a 279-m tower.Assuming the density of air is 1.29 kg/m³, what is the measured change in pressure?

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Question 11

The figure shows two fish tanks, each having ends of width 1 foot.Tank A is 3 feet long while tank B is 6 feet long.Both tanks are filled with 1 foot of water. Using the notation given above, which one of the following sets of equations below is correct for this situation?

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Question 12

11-5 A glass tube has several different cross-sectional areas with the values indicated in the figure.A piston at the left end of the tube exerts pressure so that mercury within the tube flows from the right end with a speed of 8.0 m/s.Three points within the tube are labeled A, B, and C. Notes: The drawing is not drawn to scale. Atmospheric pressure is 1.01 × 10⁵ N/m²; and the density of mercury is 13 600 kg/m³. -Determine the height h of mercury in the manometer with the evacuated upper end.

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Question 13

11-3 When a block of volume 1.00 × 10^-³ m³ is hung from a spring scale as shown in Figure A, the scale reads 10.0 N.When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged as suggested in Figure B.The density of water is 1.00 × 10³ kg/m³. -Determine the mass of the block.

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Question 14

Which one of the following statements concerning a completely enclosed fluid is true?

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Question 15

A small sculpture made of brass ( $\rho$ _brass= 8470 kg/m³) is believed to have a secret central cavity.The weight of the sculpture in air is 15.76 N.When it is submerged in water, the weight is 13.86 N.What is the volume of the secret cavity?

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Question 16

The two dams are identical with the exception that the water reservoir behind dam A extends twice the horizontal distance behind it as that of dam B.Which one of the following statements regarding these dams is correct?

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Question 17

A hypodermic needle consists of a plunger of circular cross-section that slides inside a hollow cylindrical syringe.When the plunger is pushed, the contents of the syringe are forced through a hollow needle (also of circular cross-section).If a 4.0-N force is applied to the plunger and the diameters of the plunger and the needle are 1.2 cm and 2.5 mm, respectively, what force is needed to prevent fluid flow at the needle?

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Question 18

The density of gold is 19 300 kg/m³.What is the mass of a gold sphere whose diameter is 0.25 m?

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Question 19

Which one of the following statements concerning streamline flow is true?

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Question 20

Showing 1 - 20 of 65

Exam 11: Fluids

Water enters a pipe of diameter 3.0 cm with a velocity of 3.0 m/s.The water encounters a constriction where its velocity is 15 m/s.What is the diameter of the constricted portion of the pipe?

In a car lift, compressed air with a gauge pressure of 4.0 × 105 Pa is used to raise a piston with a circular cross-sectional area.If the radius of the piston is 0.17 m, what is the maximum mass that can be raised using this piston?

A horizontal piping system that delivers a constant flow of water is constructed from pipes with different diameters as shown in the figure.At which of the labeled points is the water in the pipe under the greatest pressure? The drawing is a view from above the pipe.

After a moving van drives onto a river ferry, the ferry sinks 0.0367 m.The length and width of the ferry are 15.24 m and 6.10 m, respectfully.Determine the weight of the moving van.

Elaine went to her outside faucet to fill a 0.0189-m3 bucket with water to wash her car.Water exits with a speed of 0.61 m/s.The radius of the faucet is 0.0078 m.How long does it take to fill the bucket completely?

An ice cube ρ\rhoρ = 917 kg/m3, is sliding down a frictionless incline as shown in the drawing.The sides of the cube each have a length of 0.75 m.What pressure does the cube exert on the incline?

A 2-kg block displaces 10 kg of water when it is held fully immersed.The object is then tied down as shown in the figure; and it displaces 5 kg of water.What is the tension in the string?

A pirate's treasure chest lies 20.0 m below the surface of the ocean.What is the magnitude of the force that acts on the rectangular top that is 0.750 m × 0.425 m?

Which one of the following statements is false concerning the derivation or usage of Bernoulli's equation?

The density of mercury is 1.36 × 104 kg/m3.What is the mass of a 2.16 × 10-4-m3 sample of mercury?

A barometer is taken from the base to the top of a 279-m tower.Assuming the density of air is 1.29 kg/m3, what is the measured change in pressure?

The figure shows two fish tanks, each having ends of width 1 foot.Tank A is 3 feet long while tank B is 6 feet long.Both tanks are filled with 1 foot of water. Using the notation given above, which one of the following sets of equations below is correct for this situation?

Which one of the following statements concerning a completely enclosed fluid is true?

A small sculpture made of brass ( ρ\rhoρ brass = 8470 kg/m3) is believed to have a secret central cavity.The weight of the sculpture in air is 15.76 N.When it is submerged in water, the weight is 13.86 N.What is the volume of the secret cavity?

The two dams are identical with the exception that the water reservoir behind dam A extends twice the horizontal distance behind it as that of dam B.Which one of the following statements regarding these dams is correct?

The density of gold is 19 300 kg/m3.What is the mass of a gold sphere whose diameter is 0.25 m?

Which one of the following statements concerning streamline flow is true?

Introduction and Mathematical Concepts

Kinematics in One Dimension

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Electric Circuits

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Reflection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

Particles and Waves

The Nature of the Atom

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

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In a car lift, compressed air with a gauge pressure of 4.0 × 10⁵ Pa is used to raise a piston with a circular cross-sectional area.If the radius of the piston is 0.17 m, what is the maximum mass that can be raised using this piston?

Elaine went to her outside faucet to fill a 0.0189-m³ bucket with water to wash her car.Water exits with a speed of 0.61 m/s.The radius of the faucet is 0.0078 m.How long does it take to fill the bucket completely?

The density of mercury is 1.36 × 10⁴ kg/m³.What is the mass of a 2.16 × 10^-⁴-m³ sample of mercury?

A barometer is taken from the base to the top of a 279-m tower.Assuming the density of air is 1.29 kg/m³, what is the measured change in pressure?

A small sculpture made of brass ( $\rho$ _brass= 8470 kg/m³) is believed to have a secret central cavity.The weight of the sculpture in air is 15.76 N.When it is submerged in water, the weight is 13.86 N.What is the volume of the secret cavity?

The density of gold is 19 300 kg/m³.What is the mass of a gold sphere whose diameter is 0.25 m?