Question 1

When a suction cup sticks to a wall it is

Accepted Answer

A) pulled to the wall by the vacuum. 
B) pushed to the wall by the atmosphere. 
C) both 
D) neither 
A) pulled to the wall by the vacuum. 
B) pushed to the wall by the atmosphere. 
C) both 
D) neither

Question 2

If one of the caissons of the Falkirk Wheel contained a sunken boat, resting on its bottom, and the other carried a floating boat, the wheel balance would

Accepted Answer

A) still be maintained. 
B) be upset and more energy would be needed for operation. 
C) render the machine useless. 
D) violate Archimedes' principle. 
A) still be maintained. 
B) be upset and more energy would be needed for operation. 
C) render the machine useless. 
D) violate Archimedes' principle.

Question 3

As a swimmer dives deeper and deeper, strictly speaking, the volume of water displaced by the swimmer actually

Accepted Answer

A) decreases. 
B) increases. 
C) remains unchanged but pressure on her increases. 
D) none of the above 
A) decreases. 
B) increases. 
C) remains unchanged but pressure on her increases. 
D) none of the above

Question 4

Consider two vertical tubes of equal cross-section area, one containing water and the other mercury. If the liquid pressures at the bottom of the tubes are equal, both liquids would have equal

Accepted Answer

A) volumes. 
B) densities. 
C) weights. 
D) number of molecules. 
E) none of the above 
A) volumes. 
B) densities. 
C) weights. 
D) number of molecules. 
E) none of the above

Question 5

One liter of water has a mass of

Accepted Answer

A) 1 kg. 
B) 1 N. 
C) both 
D) neither 
A) 1 kg. 
B) 1 N. 
C) both 
D) neither

Question 6

Water pressure is greatest against the

Accepted Answer

A) top of a submerged object. 
B) bottom of a submerged object. 
C) sides of a submerged object. 
D) same against all surfaces. 
E) none of the above 
A) top of a submerged object. 
B) bottom of a submerged object. 
C) sides of a submerged object. 
D) same against all surfaces. 
E) none of the above

Question 7

Compared with an empty ship, the same ship loaded with Styrofoam will float

Accepted Answer

A) higher in the water. 
B) lower in the water. 
C) at the same level in the water. 
A) higher in the water. 
B) lower in the water. 
C) at the same level in the water.

Question 8

Water pressure at the bottom of a lake depends on the

Accepted Answer

A) weight of water in the lake. 
B) surface area of the lake. 
C) depth of the lake. 
D) all of the above 
A) weight of water in the lake. 
B) surface area of the lake. 
C) depth of the lake. 
D) all of the above

Question 9

If a pressure of 20 kPa is applied to one piston in a simple hydraulic device, the pressure on a piston of larger area will be

Accepted Answer

A) less than 20 kPa. 
B) the same 20 kPa. 
C) more than 20 kPa. 
D) all of the above 
E) none of the above 
A) less than 20 kPa. 
B) the same 20 kPa. 
C) more than 20 kPa. 
D) all of the above 
E) none of the above

Question 10

When an object is partly or wholly immersed in a liquid, it is buoyed up

Accepted Answer

A) by a force equal to its own weight. 
B) by a force equal to the weight of liquid displaced. 
C) and floats because of Archimedes' principle. 
D) but sinks. 
E) none of the above 
A) by a force equal to its own weight. 
B) by a force equal to the weight of liquid displaced. 
C) and floats because of Archimedes' principle. 
D) but sinks. 
E) none of the above

Question 11

A change in pressure at any point in a confined fluid at rest is transmitted

Accepted Answer

A) undiminished to all points in the fluid. 
B) to points of lower pressure. 
C) in the direction of lower energies. 
D) all of the above 
E) none of the above 
A) undiminished to all points in the fluid. 
B) to points of lower pressure. 
C) in the direction of lower energies. 
D) all of the above 
E) none of the above

Question 12

When gas in a container is squeezed to half its volume, its density

Accepted Answer

A) halves. 
B) doubles. 
C) quadruples. 
D) remains the same. 
A) halves. 
B) doubles. 
C) quadruples. 
D) remains the same.

Question 13

Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When each is worn by swimmers, one swimmer floats and the other sinks. Interestingly, the buoyant force is actually greater on the life preserver that

Accepted Answer

A) sinks. 
B) floats. 
C) same either way 
D) none of the above 
A) sinks. 
B) floats. 
C) same either way 
D) none of the above

Question 14

As a helium-filled balloon rises in the air, it becomes

Accepted Answer

A) bigger. 
B) more dense. 
C) heavier. 
D) all of the above 
E) none of the above 
A) bigger. 
B) more dense. 
C) heavier. 
D) all of the above 
E) none of the above

Question 15

Very importantly, a hydraulic press can multiply

Accepted Answer

A) forces. 
B) pressures. 
C) energy. 
D) all of the above 
E) none of the above 
A) forces. 
B) pressures. 
C) energy. 
D) all of the above 
E) none of the above

Question 16

Consider two tubes filled with water at the same height, one with fresh water and the other tube with salt water. The pressure is greater at the bottom of the tube with

Accepted Answer

A) fresh water. 
B) salt water. 
C) both the same 
D) depends on whether the tubes have the same cross-sectional area. 
A) fresh water. 
B) salt water. 
C) both the same 
D) depends on whether the tubes have the same cross-sectional area.

Question 17

A column of contained air extends from sea level to the top of the atmosphere. The contained air has mass. If the column instead contained the same mass of water, its height would be

Accepted Answer

A) 1/13.6 times as high as the atmosphere. 
B) about 3/4 m high. 
C) 10.3 m high. 
D) about 5.6 km high. 
A) 1/13.6 times as high as the atmosphere. 
B) about 3/4 m high. 
C) 10.3 m high. 
D) about 5.6 km high.

Question 18

Explain in terms of buoyant force how a fish is able to rise and sink in water. Contrast this to the way a submarine rises and sinks.

Accepted Answer

To rise or sink, a fish expands or contr

Question 19

Compared to a bar of pure gold, the density of a pure gold ring is

Accepted Answer

A) less. 
B) the same. 
C) more. 
A) less. 
B) the same. 
C) more.

Question 20

A swimmer cannot snorkel more than a meter deep because air

Accepted Answer

A) in the lungs cannot be easily expelled. 
B) tends to liquefy in the snorkel tube. 
C) is buoyed up leaving the swimmer breathless. 
D) at the surface will not freely enter the higher-pressure region in the compressed lungs. 
E) all of the above 
A) in the lungs cannot be easily expelled. 
B) tends to liquefy in the snorkel tube. 
C) is buoyed up leaving the swimmer breathless. 
D) at the surface will not freely enter the higher-pressure region in the compressed lungs. 
E) all of the above

Exam 5: Fluid Mechanics

When a suction cup sticks to a wall it is

If one of the caissons of the Falkirk Wheel contained a sunken boat, resting on its bottom, and the other carried a floating boat, the wheel balance would

As a swimmer dives deeper and deeper, strictly speaking, the volume of water displaced by the swimmer actually

Consider two vertical tubes of equal cross-section area, one containing water and the other mercury. If the liquid pressures at the bottom of the tubes are equal, both liquids would have equal

One liter of water has a mass of

Water pressure is greatest against the

Compared with an empty ship, the same ship loaded with Styrofoam will float

Water pressure at the bottom of a lake depends on the

If a pressure of 20 kPa is applied to one piston in a simple hydraulic device, the pressure on a piston of larger area will be

When an object is partly or wholly immersed in a liquid, it is buoyed up

A change in pressure at any point in a confined fluid at rest is transmitted

When gas in a container is squeezed to half its volume, its density

Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When each is worn by swimmers, one swimmer floats and the other sinks. Interestingly, the buoyant force is actually greater on the life preserver that

As a helium-filled balloon rises in the air, it becomes

Very importantly, a hydraulic press can multiply

Consider two tubes filled with water at the same height, one with fresh water and the other tube with salt water. The pressure is greater at the bottom of the tube with

A column of contained air extends from sea level to the top of the atmosphere. The contained air has mass. If the column instead contained the same mass of water, its height would be

Explain in terms of buoyant force how a fish is able to rise and sink in water. Contrast this to the way a submarine rises and sinks.

Compared to a bar of pure gold, the density of a pure gold ring is

A swimmer cannot snorkel more than a meter deep because air

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

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