Question 1

Figure S-2
  
-If these are sound waves, which corresponds to the highest pitch?

Accepted Answer

A) Wave I. 
B) Wave II. 
C) Wave III. 
D) Wave IV.
And which has the greatest wavelength? 
E) Wave I
F)Wave II
G)Wave III
H)Wave IV
I)all have the same wavelength 
A) Wave I. 
B) Wave II. 
C) Wave III. 
D) Wave IV.
And which has the greatest wavelength? 
E) Wave I
F)Wave II
G)Wave III
H)Wave IV
I)all have the same wavelength

Question 2

Figure G-1
  
-Pretend an object is set sliding on a huge frictionless plane in contact with the surface of Earth as shown. Once the object is set in motion it will

Accepted Answer

A) theoretically slide to the right forever 
B) slide back and forth 
C) slow down and stop
Because 
D) of its inertia. 
E) gravitational force decreases with increasing distance.
F)the object is sliding "uphill" and then "downhill" relative to the round Earth. 
A) theoretically slide to the right forever 
B) slide back and forth 
C) slow down and stop
Because 
D) of its inertia. 
E) gravitational force decreases with increasing distance.
F)the object is sliding "uphill" and then "downhill" relative to the round Earth.

Question 3

Atmospheric pressure is 105 N/m2 at sea level. This means that

Accepted Answer

A) a column of air 1 square meter in cross section extending up to the top of the atmosphere weighs 105 N, 
B) the weight of one cubic meter of air at sea level is about 105 N, 
C) the density of air is 105 N/m3,
And the force of the atmosphere against a surface of one square meter is 
D) somewhat less than 105 N. 
E) about 105 N.
F)considerably more than 105 N. 
A) a column of air 1 square meter in cross section extending up to the top of the atmosphere weighs 105 N, 
B) the weight of one cubic meter of air at sea level is about 105 N, 
C) the density of air is 105 N/m3,
And the force of the atmosphere against a surface of one square meter is 
D) somewhat less than 105 N. 
E) about 105 N.
F)considerably more than 105 N.

Question 4

A sports car and a moving van move at the same speed when they crash into a cement wall and stop equally quickly. The vehicle to have the greater force of impact will be

Accepted Answer

A) the sports car, 
B) the van, 
C) neither, for they experience equal forces of impact
Because 
D) they are traveling at the same speed. 
E) the van's momentum is much greater.
F)the sport car has a greater change in velocity upon impact.
G)they both have equal momentum. 
A) the sports car, 
B) the van, 
C) neither, for they experience equal forces of impact
Because 
D) they are traveling at the same speed. 
E) the van's momentum is much greater.
F)the sport car has a greater change in velocity upon impact.
G)they both have equal momentum.

Question 5

Figure E-4
  
-The center of gravity for each truck is marked X. Which truck(s)will tip over?

Accepted Answer

A) Truck 1 
B) Truck 2 
C) Truck 3 
D) All will tip.
This is because 
E) its center of gravity is highest.
F)its center of gravity is lowest.
G)its center of gravity lies beyond a point of support.
H)all the centers of gravity lie above the wheelbases. 
A) Truck 1 
B) Truck 2 
C) Truck 3 
D) All will tip.
This is because 
E) its center of gravity is highest.
F)its center of gravity is lowest.
G)its center of gravity lies beyond a point of support.
H)all the centers of gravity lie above the wheelbases.

Question 6

Light bends as it

Accepted Answer

A) passes a massive star, 
B) traverses any gravitational field, 
C) both of these, 
D) none of these,
And when emitted from a massive star, light is 
E) red shifted.
F)blue shifted.
G)speeded up.
H)none of these. 
A) passes a massive star, 
B) traverses any gravitational field, 
C) both of these, 
D) none of these,
And when emitted from a massive star, light is 
E) red shifted.
F)blue shifted.
G)speeded up.
H)none of these.

Question 7

Consider the fictional case of the incredible shrinking man. If his height shrinks to one-tenth, his area shrinks to

Accepted Answer

A) 1/10, 
B) 1/100, 
C) 1/1000, 
D) 1/10,000, 
E) none of these,
And his weight would shrink to
F)1/10.
G)1/100.
H)1/1000.
I)1/10,000.
10)none of these. 
A) 1/10, 
B) 1/100, 
C) 1/1000, 
D) 1/10,000, 
E) none of these,
And his weight would shrink to
F)1/10.
G)1/100.
H)1/1000.
I)1/10,000.
10)none of these.

Question 8

When an ice cube in a glass of water melts, the water level will

Accepted Answer

A) rise 
B) fall 
C) remain the same
If the floating ice cube contains a chunk of iron, during melting the water level will 
D) rise. 
E) fall.
F)remain the same. 
A) rise 
B) fall 
C) remain the same
If the floating ice cube contains a chunk of iron, during melting the water level will 
D) rise. 
E) fall.
F)remain the same.

Question 9

Compared to a soft sound, the speed of a loud sound is

Accepted Answer

A) less, 
B) greater, 
C) the same,
And compared to low-frequency sound, higher-frequency sound travels 
D) more slowly. 
E) faster.
F)the same speed. 
A) less, 
B) greater, 
C) the same,
And compared to low-frequency sound, higher-frequency sound travels 
D) more slowly. 
E) faster.
F)the same speed.

Question 10

Figure M-1
  
-Which of the two identical pyramids is exerting the most pressure on the floor?

Accepted Answer

A) A 
B) B 
C) both the same
The reason for this is that 
D) they both have the same weight. 
E) the heaviest part of the pyramid is closer to the floor.
F)the weight is distributed over a smaller area.
G)the weight is distributed over a larger area. 
A) A 
B) B 
C) both the same
The reason for this is that 
D) they both have the same weight. 
E) the heaviest part of the pyramid is closer to the floor.
F)the weight is distributed over a smaller area.
G)the weight is distributed over a larger area.

Question 11

Figure T-3
  
-The 50-kg stuntman places a 50-kg uniform 6-meter plank on top of a skyscraper and stands on the tip of it that overhangs the building as shown. What is the approximate distance that the overhang can be extended without disaster?

Accepted Answer

A) 0.5 m 
B) 1 m 
C) 1.5 m
If the 6-meter board has a mass of only 25 kilograms, then the maximum overhang distance would be about 
D) 0.5 m. 
E) 1 m.
F)1.5 m.
G)2 m. 
A) 0.5 m 
B) 1 m 
C) 1.5 m
If the 6-meter board has a mass of only 25 kilograms, then the maximum overhang distance would be about 
D) 0.5 m. 
E) 1 m.
F)1.5 m.
G)2 m.

Question 12

When a molecule collides with another that is approaching with greater momentum, its rebound speed

Accepted Answer

A) stays the same, 
B) increases, 
C) decreases,
And when a molecule collides with another that is receding, its rebound speed 
D) stays the same. 
E) increases.
F)decreases. 
A) stays the same, 
B) increases, 
C) decreases,
And when a molecule collides with another that is receding, its rebound speed 
D) stays the same. 
E) increases.
F)decreases.

Question 13

Neglecting friction, a ball rolling along a horizontal plane will

Accepted Answer

A) accelerate indefinitely. 
B) roll until the force used to roll it was used up. 
C) roll indefinitely at a constant speed.
This illustrates 
D) the basic principle that a body requires a push or pull to keep it moving. 
E) inertia.
F)the law of net force. 
A) accelerate indefinitely. 
B) roll until the force used to roll it was used up. 
C) roll indefinitely at a constant speed.
This illustrates 
D) the basic principle that a body requires a push or pull to keep it moving. 
E) inertia.
F)the law of net force.

Question 14

We can apply the equation Ft = change in (mv)to the case of a baseball player striking a pitched ball. To impart the maximum change in momentum, mv, to the ball, the batter hits the ball with the greatest force he can muster and he also

Accepted Answer

A) extends the time of contact as much as possible by "following through." 
B) makes the time of contact as short as possible, thereby increasing the force. 
C) none of the above!
In the impulse-momentum equation applied to hitting the ball, the "v" represents 
D) the velocity of the bat. 
E) the velocity of the ball.
F)a vector quantity. 
A) extends the time of contact as much as possible by "following through." 
B) makes the time of contact as short as possible, thereby increasing the force. 
C) none of the above!
In the impulse-momentum equation applied to hitting the ball, the "v" represents 
D) the velocity of the bat. 
E) the velocity of the ball.
F)a vector quantity.

Question 15

Figure V-3
  
-The weight of the barrel on the slope is shown by the vector which has components (not shown)parallel to the surface of the incline and perpendicular to the surface of the incline. Judging from the slope of incline, the greater of these two components is

Accepted Answer

A) parallel to the slope. 
B) perpendicular to the slope. 
C) both the same. 
D) need more information
If the slope of the incline were steeper, this component vector would 
E) decrease.
F)remain the same.
G)increase.
H)again, can't really say. 
A) parallel to the slope. 
B) perpendicular to the slope. 
C) both the same. 
D) need more information
If the slope of the incline were steeper, this component vector would 
E) decrease.
F)remain the same.
G)increase.
H)again, can't really say.

Question 16

Figure N-6
  
-Two 50-N weights pull on the scale as shown. The reading on the scale is

Accepted Answer

A) 0 N. 
B) 25 N. 
C) 50 N. 
D) 100 N.
This is clearer to understand if we think of the situation this way: 
E) Since no acceleration is taking place, the forces cancel one another.
F)One of the weights "holds" the scale while the other weight stretches the spring.
G)The two hanging weights provide forces that constitute an action/reaction pair. 
A) 0 N. 
B) 25 N. 
C) 50 N. 
D) 100 N.
This is clearer to understand if we think of the situation this way: 
E) Since no acceleration is taking place, the forces cancel one another.
F)One of the weights "holds" the scale while the other weight stretches the spring.
G)The two hanging weights provide forces that constitute an action/reaction pair.

Question 17

High tides are predominately produced by the

Accepted Answer

A) strong gravitational pull of the Sun, 
B) centrifugal force created by Earth-Moon orbit, 
C) differences in gravitational pulls of the Moon on opposite sides of Earth,
Which is due to 
D) rotation of Earth and Moon about the Sun. 
E) Moon pulling with significantly more force on the closer side of Earth than on the farther side.
F)the Sun's pull on Earth being 200 times stronger than Moon's gravitational pull. 
A) strong gravitational pull of the Sun, 
B) centrifugal force created by Earth-Moon orbit, 
C) differences in gravitational pulls of the Moon on opposite sides of Earth,
Which is due to 
D) rotation of Earth and Moon about the Sun. 
E) Moon pulling with significantly more force on the closer side of Earth than on the farther side.
F)the Sun's pull on Earth being 200 times stronger than Moon's gravitational pull.

Question 18

Which man exerts greater pressure against the floor?

Accepted Answer

A) a 150-kg man lying on the floor 
B) a 150-kg man standing on the floor 
C) Both men exert the same pressure.
The reason is that 
D) both men have the same weight. 
E) the upright man's weight is distributed over a smaller area.
F)the man lying down has his weight equally distributed. 
A) a 150-kg man lying on the floor 
B) a 150-kg man standing on the floor 
C) Both men exert the same pressure.
The reason is that 
D) both men have the same weight. 
E) the upright man's weight is distributed over a smaller area.
F)the man lying down has his weight equally distributed.

Question 19

You can exert more force on the pedals of a bicycle if you pull up on the handlebars because

Accepted Answer

A) your center of gravity can be shifted to a position directly above the pedals, 
B) the handlebars, in turn, pull down on you and this force is transmitted to the pedals, 
C) rotational inertia is lessened, 
D) rotational inertia is increased,
All of which illustrates 
E) that equilibrium is center-of-gravity dependent.
F)the law of action and reaction.
G)inertia may be both linear and rotational. 
A) your center of gravity can be shifted to a position directly above the pedals, 
B) the handlebars, in turn, pull down on you and this force is transmitted to the pedals, 
C) rotational inertia is lessened, 
D) rotational inertia is increased,
All of which illustrates 
E) that equilibrium is center-of-gravity dependent.
F)the law of action and reaction.
G)inertia may be both linear and rotational.

Question 20

When the momentum of a punch is stopped by the fighter's jaw, he "rides with the punch" so as to

Accepted Answer

A) decrease the velocity of the blow, 
B) increase the time of contact of the blow,
And thereby reduce the 
C) force. 
D) impulse. 
E) momentum.
F)energy. 
A) decrease the velocity of the blow, 
B) increase the time of contact of the blow,
And thereby reduce the 
C) force. 
D) impulse. 
E) momentum.
F)energy.

Exam 37: Systems of Measurement

Figure S-2 -If these are sound waves, which corresponds to the highest pitch?

Figure G-1 -Pretend an object is set sliding on a huge frictionless plane in contact with the surface of Earth as shown. Once the object is set in motion it will

Atmospheric pressure is 105 N/m2 at sea level. This means that

A sports car and a moving van move at the same speed when they crash into a cement wall and stop equally quickly. The vehicle to have the greater force of impact will be

Figure E-4 -The center of gravity for each truck is marked X. Which truck(s)will tip over?

Light bends as it

Consider the fictional case of the incredible shrinking man. If his height shrinks to one-tenth, his area shrinks to

When an ice cube in a glass of water melts, the water level will

Compared to a soft sound, the speed of a loud sound is

Figure M-1 -Which of the two identical pyramids is exerting the most pressure on the floor?

Figure T-3 -The 50-kg stuntman places a 50-kg uniform 6-meter plank on top of a skyscraper and stands on the tip of it that overhangs the building as shown. What is the approximate distance that the overhang can be extended without disaster?

When a molecule collides with another that is approaching with greater momentum, its rebound speed

Neglecting friction, a ball rolling along a horizontal plane will

We can apply the equation Ft = change in (mv)to the case of a baseball player striking a pitched ball. To impart the maximum change in momentum, mv, to the ball, the batter hits the ball with the greatest force he can muster and he also

Figure V-3 -The weight of the barrel on the slope is shown by the vector which has components (not shown)parallel to the surface of the incline and perpendicular to the surface of the incline. Judging from the slope of incline, the greater of these two components is

Figure N-6 -Two 50-N weights pull on the scale as shown. The reading on the scale is

High tides are predominately produced by the

Which man exerts greater pressure against the floor?

You can exert more force on the pedals of a bicycle if you pull up on the handlebars because

When the momentum of a punch is stopped by the fighter's jaw, he "rides with the punch" so as to

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Atmospheric pressure is 10⁵ N/m² at sea level. This means that