Question 1

Water is pumped into one end of a long pipe at the rate of 40 L/min.It emerges at the other end at 24 L/min.A possible reason for this decrease in flow is:

Accepted Answer

A) the water is being pumped uphill 
B) the water is being pumped downhill 
C) the diameter of the pipe is not the same at the two ends 
D) friction in the pipe 
E) a leak in the pipe 
A) the water is being pumped uphill 
B) the water is being pumped downhill 
C) the diameter of the pipe is not the same at the two ends 
D) friction in the pipe 
E) a leak in the pipe

Question 2

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?

Accepted Answer

A) 4 g 
B) 10 g 
C) 12 g 
D) 16 g 
E) zero, since the object will float 
A) 4 g 
B) 10 g 
C) 12 g 
D) 16 g 
E) zero, since the object will float

Question 3

The quantity y appearing in Bernoulli's equation MUST be measured:

Accepted Answer

A) upward from the center of the Earth 
B) upward from the surface of the Earth 
C) upward from the lowest point in the flow 
D) downward from the highest point in the flow 
E) upward from any convenient level 
A) upward from the center of the Earth 
B) upward from the surface of the Earth 
C) upward from the lowest point in the flow 
D) downward from the highest point in the flow 
E) upward from any convenient level

Question 4

A block of ice at 0$\degree$C is floating on the surface of water in a beaker.The surface of the water just comes to the top of the beaker.When the ice melts the water level will:

Accepted Answer

A) rise and overflow will occur 
B) remain the same 
C) fall 
D) depend on the initial ratio of water to ice 
E) depend on the shape of the block of ice 
A) rise and overflow will occur 
B) remain the same 
C) fall 
D) depend on the initial ratio of water to ice 
E) depend on the shape of the block of ice

Question 5

The equation of continuity for fluid flow can be derived from the conservation of:

Accepted Answer

A) energy 
B) mass 
C) angular momentum 
D) volume 
E) pressure 
A) energy 
B) mass 
C) angular momentum 
D) volume 
E) pressure

Question 6

A constriction in a pipe reduces its diameter from 4.0 cm to 2.0 cm.Where the pipe is narrow the water speed is 8.0 m/s.Where it is wide the water speed is:

Accepted Answer

A) 2.0 m/s 
B) 4.0 m/s 
C) 8.0 m/s 
D) 16 m/s 
E) 32 m/s 
A) 2.0 m/s 
B) 4.0 m/s 
C) 8.0 m/s 
D) 16 m/s 
E) 32 m/s

Question 7

Water flows through a constriction in a horizontal pipe.As it enters the constriction, the water's:

Accepted Answer

A) speed increases and pressure decreases 
B) speed increases and pressure remains constant 
C) speed increases and pressure increases 
D) speed decreases and pressure increases 
E) speed decreases and pressure decreases 
A) speed increases and pressure decreases 
B) speed increases and pressure remains constant 
C) speed increases and pressure increases 
D) speed decreases and pressure increases 
E) speed decreases and pressure decreases

Exam 14: Fluids

Water is pumped into one end of a long pipe at the rate of 40 L/min.It emerges at the other end at 24 L/min.A possible reason for this decrease in flow 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?

The quantity y appearing in Bernoulli's equation MUST be measured:

A block of ice at 0 °\degree° C is floating on the surface of water in a beaker.The surface of the water just comes to the top of the beaker.When the ice melts the water level will:

The equation of continuity for fluid flow can be derived from the conservation of:

A constriction in a pipe reduces its diameter from 4.0 cm to 2.0 cm.Where the pipe is narrow the water speed is 8.0 m/s.Where it is wide the water speed is:

Water flows through a constriction in a horizontal pipe.As it enters the constriction, the water's:

Measurement

Motion Along a Straight Line

Vector

Motion in Two and Three Dimensions

Force and Motion I

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

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 block of ice at 0 $\degree$ C is floating on the surface of water in a beaker.The surface of the water just comes to the top of the beaker.When the ice melts the water level will: