Question 1

When holes are drilled through the wall of a water tower , water will spurt out the greatest horizontal distance from the hole closest to

Accepted Answer

A)  the middle of the tower. 
B)  the top of the tower. 
C)  the bottom of the tower. 
D)  The horizontal distance will be the same for all holes. 
A)  the middle of the tower. 
B)  the top of the tower. 
C)  the bottom of the tower. 
D)  The horizontal distance will be the same for all holes.

Question 2

A rock suspended by a string weighs 5 N out of water and 3 N when submerged. What is the buoyant force on the rock?

Accepted Answer

A)  3 N 
B)  5 N 
C)  2 N 
D)  8 N 
E)  none of these 
A)  3 N 
B)  5 N 
C)  2 N 
D)  8 N 
E)  none of these

Question 3

A hydraulic press multiplies a force by 100. This multiplication is done at the expense of

Accepted Answer

A)  the distance through which the force acts. 
B)  energy, which is divided by 100. 
C)  the mechanism providing the force. 
D)  the time through which the force acts, which is multiplied by 100. 
E)  none of these 
A)  the distance through which the force acts. 
B)  energy, which is divided by 100. 
C)  the mechanism providing the force. 
D)  the time through which the force acts, which is multiplied by 100. 
E)  none of these

Question 4

A block of wood weighing 5 N in air, is difficult fully submerge in a pool of mercury because the buoyant force when fully submerged is

Accepted Answer

A)  more than 5 N. 
B)  less than 5 N. 
C)  5 N. 
A)  more than 5 N. 
B)  less than 5 N. 
C)  5 N.

Question 5

When water is turned on in a shower, the shower curtain moves towards the water. This has to do with

Accepted Answer

A)  heat capacity. 
B)  capillary action. 
C)  surface tension. 
D)  pressure of a moving fluid. 
E)  none of these 
A)  heat capacity. 
B)  capillary action. 
C)  surface tension. 
D)  pressure of a moving fluid. 
E)  none of these

Question 6

A balloon is buoyed up with a force equal to the

Accepted Answer

A)  atmospheric pressure. 
B)  weight of the balloon and contents. 
C)  weight of air it displaces. 
D)  density of surrounding air. 
E)  all of these 
A)  atmospheric pressure. 
B)  weight of the balloon and contents. 
C)  weight of air it displaces. 
D)  density of surrounding air. 
E)  all of these

Question 7

An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes

Accepted Answer

A)  salt sinks to the bottom. 
B)  the density of salt water exceeds the density of egg. 
C)  buoyant force does not always act upward. 
D)  calcium in the egg shell is repelled by sodium chloride. 
A)  salt sinks to the bottom. 
B)  the density of salt water exceeds the density of egg. 
C)  buoyant force does not always act upward. 
D)  calcium in the egg shell is repelled by sodium chloride.

Question 8

Blood pressure is normally greater in your

Accepted Answer

A)  feet. 
B)  ears. 
C)  same in each 
A)  feet. 
B)  ears. 
C)  same in each

Question 9

The reason a life jacket helps you float is

Accepted Answer

A)  if you sink, the jacket sinks. 
B)  the jacket has the same density as an average human. 
C)  the jacket repels water. 
D)  the jacket makes you weigh less. 
E)  the density of both you and the jacket together is less than your density alone. 
A)  if you sink, the jacket sinks. 
B)  the jacket has the same density as an average human. 
C)  the jacket repels water. 
D)  the jacket makes you weigh less. 
E)  the density of both you and the jacket together is less than your density alone.

Question 10

Two equal sized buckets are filled to the top with water. One of the buckets has a piece of wood floating in it, making its total weight

Accepted Answer

A)  more than the weight of the other bucket. 
B)  less than the weight of the other bucket. 
C)  equal to the weight of the other bucket. 
A)  more than the weight of the other bucket. 
B)  less than the weight of the other bucket. 
C)  equal to the weight of the other bucket.

Question 11

A heavy glass ball is placed in a pie pan that floats in a bucket. The water level at the side of the bucket is marked. Then the glass ball is removed and allowed to sink in the bucket. The water line at the side of the bucket is now

Accepted Answer

A)  lower. 
B)  higher. 
C)  the same. 
A)  lower. 
B)  higher. 
C)  the same.

Question 12

Two life preservers have identical volumes, but one is filled with styrofoam while the other is filled with sand. When the two life preservers are fully submerged, the buoyant force is greater on the
One filled with

Accepted Answer

A)  sand. 
B)  styrofoam. 
C)  same on each as long as their volumes are the same 
A)  sand. 
B)  styrofoam. 
C)  same on each as long as their volumes are the same

When holes are drilled through the wall of a water tower , water will spurt out the greatest horizontal distance from the hole closest to

A rock suspended by a string weighs 5 N out of water and 3 N when submerged. What is the buoyant force on the rock?

A hydraulic press multiplies a force by 100. This multiplication is done at the expense of

A block of wood weighing 5 N in air, is difficult fully submerge in a pool of mercury because the buoyant force when fully submerged is

When water is turned on in a shower, the shower curtain moves towards the water. This has to do with

A balloon is buoyed up with a force equal to the

An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes

Blood pressure is normally greater in your

The reason a life jacket helps you float is

Two equal sized buckets are filled to the top with water. One of the buckets has a piece of wood floating in it, making its total weight

A heavy glass ball is placed in a pie pan that floats in a bucket. The water level at the side of the bucket is marked. Then the glass ball is removed and allowed to sink in the bucket. The water line at the side of the bucket is now

Two life preservers have identical volumes, but one is filled with styrofoam while the other is filled with sand. When the two life preservers are fully submerged, the buoyant force is greater on the One filled with

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Exam 7: Fluid Mechanics

When holes are drilled through the wall of a water tower , water will spurt out the greatest horizontal distance from the hole closest to

A rock suspended by a string weighs 5 N out of water and 3 N when submerged. What is the buoyant force on the rock?

A hydraulic press multiplies a force by 100. This multiplication is done at the expense of

A block of wood weighing 5 N in air, is difficult fully submerge in a pool of mercury because the buoyant force when fully submerged is

When water is turned on in a shower, the shower curtain moves towards the water. This has to do with

A balloon is buoyed up with a force equal to the

An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes

Blood pressure is normally greater in your

The reason a life jacket helps you float is

Two equal sized buckets are filled to the top with water. One of the buckets has a piece of wood floating in it, making its total weight

A heavy glass ball is placed in a pie pan that floats in a bucket. The water level at the side of the bucket is marked. Then the glass ball is removed and allowed to sink in the bucket. The water line at the side of the bucket is now

Two life preservers have identical volumes, but one is filled with styrofoam while the other is filled with sand. When the two life preservers are fully submerged, the buoyant force is greater on the One filled with

About Science

Atoms

Equilibrium and Linear Motion

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

Quantum Theory

The Atomic Nucleus and Radioactivity

Physics of Rotation and Equilibrium

Filters