Water is streaming downward from a faucet opening with an area of 3.0 x 10-5 m2.It leaves the faucet with a speed of 5.0 m/s.The cross sectional area of the stream 0.50 m below the faucet is:

A) 1.5 x10-5 m2 B) 2.0x 10-5 m2 C) 2.5x 10-5 m2 D) 3.0 x 10-5 m2 E) 3.5 x 10-5 m2 A) 1.5 x10-5 m2 B) 2.0x 10-5 m2 C) 2.5x 10-5 m2 D) 3.0 x 10-5 m2 E) 3.5 x 10-5 m2 C

A certain object floats in fluids of density 1. 0.9 2. 3. 1.1 Rank these fluids according to the volume displaced by the object, least to greatest.

A) 1, 2, 3 B) 3, 2, 1 C) 2, 3, 1 D) 3, 1, 2 E) All are the same A) 1, 2, 3 B) 3, 2, 1 C) 2, 3, 1 D) 3, 1, 2 E) All are the same

A uniform U-tube is partially filled with water.Oil, of density 0.75 g/cm3, is poured into the right arm until the water level in the left arm rises 3 cm.The length of the oil column is then:

A) 2.25 cm B) 8 cm C) 6 cm D) 4 cm E) need to know the cross-sectional area of the U-tube A) 2.25 cm B) 8 cm C) 6 cm D) 4 cm E) need to know the cross-sectional area of the U-tube

The density of water is 1.0 g/cm3.If h = 20 cm, the density of the oil in the left column of the U-tube shown below is:

A) 0.20 g/cm3 B) 0.90 g/cm3 C) 1.0 g/cm3 D) 1.3 g/cm3 E) 5.0 g/cm3 A) 0.20 g/cm3 B) 0.90 g/cm3 C) 1.0 g/cm3 D) 1.3 g/cm3 E) 5.0 g/cm3

A long U-tube contains mercury (density = 14 x 103 kg/m3).When 10 cm of water (density = 1.0 x 103 kg/m 3)is poured into the left arm, the mercury in the right arm rises above its original level by:

A) 0.36 cm B) 0.72 cm C) 14 cm D) 35 cm E) 70 cm A) 0.36 cm B) 0.72 cm C) 14 cm D) 35 cm E) 70 cm

If p is a pressure and is a mass density then p/ has units of:

A) m2 B) m2/s2 C) N/m2 D) kg/m2 E) m3/kg A) m2 B) m2/s2 C) N/m2 D) kg/m2 E) m3/kg

Exam 14: Fluids

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Water is streaming downward from a faucet opening with an area of 3.0 x 10^-5 m².It leaves the faucet with a speed of 5.0 m/s.The cross sectional area of the stream 0.50 m below the faucet is:

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Question 1

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The units of pressure can also be written as:

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Question 2

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A lawn sprinkler is made of a 1.0 cm diameter garden hose with one end closed and 25 holes, each with a diameter of 0.050 cm, cut near the closed end.If water flows at 2.0 m/s in the hose, the speed of the water leaving a hole is:

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A solid has a volume of 8 cm³.When weighed on a spring scale calibrated in grams, the scale indicates 20 g.What does the scale indicate if the object is weighed while immersed in a liquid of density 2 g/cm³?

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Question 4

Which of the following statements about Pascal's principle is true?

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Question 5

The vessels shown below all contain water to the same height.Rank them according to the pressure exerted by the water on the vessel bottoms, least to greatest.

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Question 6

Two identical blocks of ice float in water as shown.Then:

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Question 7

A certain object floats in fluids of density 1. 0.9 2. 11ef0078_1e09_aa02_bc85_bb66f8c21327_TB6585_11 3. 1.1 11ef0078_1e09_aa02_bc85_bb66f8c21327_TB6585_11 Rank these fluids according to the volume displaced by the object, least to greatest.

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Question 8

A U-tube has dissimilar arms, one having twice the diameter of the other.It contains an incompressible fluid and is fitted with a sliding piston in each arm, with each piston in contact with the fluid.When an applied force does work W in pushing the piston in the narrow arm down, the fluid does work __________ on the piston in the wide arm.

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Question 9

The hydraulic automobile jack illustrates:

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Question 10

A uniform U-tube is partially filled with water.Oil, of density 0.75 g/cm³, is poured into the right arm until the water level in the left arm rises 3 cm.The length of the oil column is then:

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Question 11

A person blows across the top of one arm of a U-tube partially filled with water.The water in that arm:

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Question 12

A cork floats in water in a bucket resting on the floor of an elevator.The elevator then accelerates upward.During the acceleration:

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Question 13

An object floats on the surface of a fluid.For purposes of calculating the torque on it, the buoyant force is taken to act at:

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Question 14

A water line enters a house 2.0 m below ground.A smaller diameter pipe carries water to a faucet 5.0 m above ground, on the second floor.Water flows at 2.0 m/s in the main line and at 7.0 m/s on the second floor.Take the density of water to be 1.0 x10³ kg/m³.The pressure in the main line is 2.0 x 10⁵ Pa; then the difference in pressure between the main line and the second floor is:

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Question 15

The density of water is 1.0 g/cm³.If h = 20 cm, the density of the oil in the left column of the U-tube shown below is:

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Question 16

The apparent weight of a steel sphere immersed in various liquids is measured using a spring scale.The greatest reading is obtained for that liquid:

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Question 17

A long U-tube contains mercury (density = 14 x 10³ kg/m³).When 10 cm of water (density = 1.0 x 10³ kg/m ³)is poured into the left arm, the mercury in the right arm rises above its original level by:

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Question 18

If p is a pressure and is a mass density then p/ 11ef0076_d175_969e_bc85_552e7cfebd27_TB6585_11 has units of:

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Question 19

A block of wood weighs 160 N and has a specific gravity of 0.60.To sink it in fresh water requires an additional downward force of:

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Question 20

Showing 1 - 20 of 91

Exam 14: Fluids

Water is streaming downward from a faucet opening with an area of 3.0 x 10-5 m2.It leaves the faucet with a speed of 5.0 m/s.The cross sectional area of the stream 0.50 m below the faucet is:

The units of pressure can also be written as:

A lawn sprinkler is made of a 1.0 cm diameter garden hose with one end closed and 25 holes, each with a diameter of 0.050 cm, cut near the closed end.If water flows at 2.0 m/s in the hose, the speed of the water leaving a hole is:

A solid has a volume of 8 cm3.When weighed on a spring scale calibrated in grams, the scale indicates 20 g.What does the scale indicate if the object is weighed while immersed in a liquid of density 2 g/cm3?

Which of the following statements about Pascal's principle is true?

The vessels shown below all contain water to the same height.Rank them according to the pressure exerted by the water on the vessel bottoms, least to greatest.

Two identical blocks of ice float in water as shown.Then:

A certain object floats in fluids of density 1. 0.9 2. 11ef0078_1e09_aa02_bc85_bb66f8c21327_TB6585_11 3. 1.1 11ef0078_1e09_aa02_bc85_bb66f8c21327_TB6585_11 Rank these fluids according to the volume displaced by the object, least to greatest.

The hydraulic automobile jack illustrates:

A uniform U-tube is partially filled with water.Oil, of density 0.75 g/cm3, is poured into the right arm until the water level in the left arm rises 3 cm.The length of the oil column is then:

A person blows across the top of one arm of a U-tube partially filled with water.The water in that arm:

A cork floats in water in a bucket resting on the floor of an elevator.The elevator then accelerates upward.During the acceleration:

An object floats on the surface of a fluid.For purposes of calculating the torque on it, the buoyant force is taken to act at:

The density of water is 1.0 g/cm3.If h = 20 cm, the density of the oil in the left column of the U-tube shown below is:

The apparent weight of a steel sphere immersed in various liquids is measured using a spring scale.The greatest reading is obtained for that liquid:

A long U-tube contains mercury (density = 14 x 103 kg/m3).When 10 cm of water (density = 1.0 x 103 kg/m 3)is poured into the left arm, the mercury in the right arm rises above its original level by:

If p is a pressure and is a mass density then p/ 11ef0076_d175_969e_bc85_552e7cfebd27_TB6585_11 has units of:

A block of wood weighs 160 N and has a specific gravity of 0.60.To sink it in fresh water requires an additional downward force of:

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Water is streaming downward from a faucet opening with an area of 3.0 x 10^-5 m².It leaves the faucet with a speed of 5.0 m/s.The cross sectional area of the stream 0.50 m below the faucet is:

A solid has a volume of 8 cm³.When weighed on a spring scale calibrated in grams, the scale indicates 20 g.What does the scale indicate if the object is weighed while immersed in a liquid of density 2 g/cm³?

A uniform U-tube is partially filled with water.Oil, of density 0.75 g/cm³, is poured into the right arm until the water level in the left arm rises 3 cm.The length of the oil column is then:

The density of water is 1.0 g/cm³.If h = 20 cm, the density of the oil in the left column of the U-tube shown below is:

A long U-tube contains mercury (density = 14 x 10³ kg/m³).When 10 cm of water (density = 1.0 x 10³ kg/m ³)is poured into the left arm, the mercury in the right arm rises above its original level by: