A Boeing 737 airliner has a mass of 20 000 kg and the total area of both wings (top or bottom) is 100 m2. What is the pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude?

A) 1 960 N/m2 B) 3 920 N/m2 C) 7 840 N/m2 D) 4 560 N/m2 E) 3 070 N/m2 A) 1 960 N/m2 B) 3 920 N/m2 C) 7 840 N/m2 D) 4 560 N/m2 E) 3 070 N/m2

Exam 14: Fluid Mechanics

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 N/m², and 1 ATM = 1.01 × 10⁵ N/m².

(Multiple Choice)

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Question 21

Exhibit 14-1 A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker. Use this exhibit to answer the following question(s). -Refer to Exhibit 14-1. The absolute pressure at point A, in Pa, is

(Multiple Choice)

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Question 22

Determine the minimum area of a flat ice floe 1.0 meter thick if it is to support a 2 000-kg car above seawater. (ρ_ice = 920 kg/m³, ρ_sea = 1 020 kg/m³.)

(Multiple Choice)

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Question 23

A supertanker filled with oil has a total mass of 6.1 × 10⁸ kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the bottom of the ship is below sea level. (ρ_sea = 1 020 kg/m³.)

(Multiple Choice)

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Question 24

A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (ρ = 1.2 kg/m³.)

(Multiple Choice)

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Question 25

A blimp is filled with 200 m³ of helium. How much mass can the balloon lift? The density of helium is one-seventh that of air, and the density of air is 1/800 that of water. Consider the mass of the balloon to be negligible.

(Multiple Choice)

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Question 26

A waiter in a restaurant fills a pitcher full of water and ice so that water would spill out if any more were added. As the ice starts to melt

(Multiple Choice)

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Question 27

What is the total mass of the Earth's atmosphere? The radius of the Earth is 6.4 × 10⁶ m, and 1 ATM = 1.01 × 10⁵ N/m².

(Multiple Choice)

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Question 28

A Boeing 737 airliner has a mass of 20 000 kg and the total area of both wings (top or bottom) is 100 m². What is the pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude?

(Multiple Choice)

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Question 29

A boat is floating in a small pond. The boat then sinks resting on the bottom, but the pond is so shallow that part of the boat is not submerged. What happens to the level of the pond?

(Multiple Choice)

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Question 30

A natural gas pipeline with a diameter 0.250 m delivers 1.55 cubic meters of gas per second. What is the flow speed of the gas in the pipeline?

(Short Answer)

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Question 31

An iron block of density ρ_Fe and of volume l³ is immersed in a fluid of density ρ_fluid. The block hangs from a scale which reads W as the weight. The top of the block is a height h below the surface of the fluid. The correct equation for the reading of the scale is

(Multiple Choice)

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Question 32

Some species of whales can dive to depths of one kilometer. What is the total pressure they experience at this depth? (ρ_sea = 1 020 kg/m³ and 1.01 × 10⁵ N/m² = 1 ATM.)

(Multiple Choice)

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Question 33

Exhibit 14-1 A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker. Use this exhibit to answer the following question(s). -Refer to Exhibit 14-1. The gauge pressure at point A, in Pa, is

(Multiple Choice)

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Question 34

Water is flowing at 4.0 m/s in a circular pipe. If the diameter of the pipe decreases to 1/2 its former value, what is the velocity of the water downstream?

(Multiple Choice)

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(31)

Question 35

Two identical fish, both at sea level, float in two identical aquariums with identical quantities of water. Fish A is in Alaska, so it weighs more than fish B at the equator, since g is larger at sea level in Alaska. Which statement is correct?

(Multiple Choice)

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Question 36

A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, the gauge pressure at point A, in Pa, is

(Multiple Choice)

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Question 37

All people come very close to being able to float in water. What therefore is the volume (in cubic meters) of a 50-kg woman?

(Multiple Choice)

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Question 38

A thin rectangular piece of wood floats in water. You slowly pour oil with a density equal to that of the wood on the surface of the water until the height of the oil above the water is twice the height of the piece of wood. Which statement is correct?

(Multiple Choice)

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Question 39

Air within the funnel of a large tornado may have a pressure of only 0.2 ATM. What is the approximate outward force on a (5 m × 10 m) wall if a tornado suddenly envelops the house? (1 ATM = 1.01 × 10⁵ N/m².)

(Multiple Choice)

4.7/5

(35)

Question 40

Showing 21 - 40 of 53

Exam 14: Fluid Mechanics

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 N/m2, and 1 ATM = 1.01 × 105 N/m2.

Determine the minimum area of a flat ice floe 1.0 meter thick if it is to support a 2 000-kg car above seawater. (ρice = 920 kg/m3, ρsea = 1 020 kg/m3.)

A supertanker filled with oil has a total mass of 6.1 × 108 kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the bottom of the ship is below sea level. (ρsea = 1 020 kg/m3.)

A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (ρ = 1.2 kg/m3.)

A blimp is filled with 200 m3 of helium. How much mass can the balloon lift? The density of helium is one-seventh that of air, and the density of air is 1/800 that of water. Consider the mass of the balloon to be negligible.

A waiter in a restaurant fills a pitcher full of water and ice so that water would spill out if any more were added. As the ice starts to melt

What is the total mass of the Earth's atmosphere? The radius of the Earth is 6.4 × 106 m, and 1 ATM = 1.01 × 105 N/m2.

A Boeing 737 airliner has a mass of 20 000 kg and the total area of both wings (top or bottom) is 100 m2. What is the pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude?

A boat is floating in a small pond. The boat then sinks resting on the bottom, but the pond is so shallow that part of the boat is not submerged. What happens to the level of the pond?

A natural gas pipeline with a diameter 0.250 m delivers 1.55 cubic meters of gas per second. What is the flow speed of the gas in the pipeline?

An iron block of density ρFe and of volume l3 is immersed in a fluid of density ρfluid. The block hangs from a scale which reads W as the weight. The top of the block is a height h below the surface of the fluid. The correct equation for the reading of the scale is

Some species of whales can dive to depths of one kilometer. What is the total pressure they experience at this depth? (ρsea = 1 020 kg/m3 and 1.01 × 105 N/m2 = 1 ATM.)

Water is flowing at 4.0 m/s in a circular pipe. If the diameter of the pipe decreases to 1/2 its former value, what is the velocity of the water downstream?

Two identical fish, both at sea level, float in two identical aquariums with identical quantities of water. Fish A is in Alaska, so it weighs more than fish B at the equator, since g is larger at sea level in Alaska. Which statement is correct?

A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, the gauge pressure at point A, in Pa, is

All people come very close to being able to float in water. What therefore is the volume (in cubic meters) of a 50-kg woman?

A thin rectangular piece of wood floats in water. You slowly pour oil with a density equal to that of the wood on the surface of the water until the height of the oil above the water is twice the height of the piece of wood. Which statement is correct?

Air within the funnel of a large tornado may have a pressure of only 0.2 ATM. What is the approximate outward force on a (5 m × 10 m) wall if a tornado suddenly envelops the house? (1 ATM = 1.01 × 105 N/m2.)

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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 N/m², and 1 ATM = 1.01 × 10⁵ N/m².

Determine the minimum area of a flat ice floe 1.0 meter thick if it is to support a 2 000-kg car above seawater. (ρ_ice = 920 kg/m³, ρ_sea = 1 020 kg/m³.)

A supertanker filled with oil has a total mass of 6.1 × 10⁸ kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the bottom of the ship is below sea level. (ρ_sea = 1 020 kg/m³.)

A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (ρ = 1.2 kg/m³.)

A blimp is filled with 200 m³ of helium. How much mass can the balloon lift? The density of helium is one-seventh that of air, and the density of air is 1/800 that of water. Consider the mass of the balloon to be negligible.

What is the total mass of the Earth's atmosphere? The radius of the Earth is 6.4 × 10⁶ m, and 1 ATM = 1.01 × 10⁵ N/m².

A Boeing 737 airliner has a mass of 20 000 kg and the total area of both wings (top or bottom) is 100 m². What is the pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude?

An iron block of density ρ_Fe and of volume l³ is immersed in a fluid of density ρ_fluid. The block hangs from a scale which reads W as the weight. The top of the block is a height h below the surface of the fluid. The correct equation for the reading of the scale is

Some species of whales can dive to depths of one kilometer. What is the total pressure they experience at this depth? (ρ_sea = 1 020 kg/m³ and 1.01 × 10⁵ N/m² = 1 ATM.)

Air within the funnel of a large tornado may have a pressure of only 0.2 ATM. What is the approximate outward force on a (5 m × 10 m) wall if a tornado suddenly envelops the house? (1 ATM = 1.01 × 10⁵ N/m².)