Question 1

If an elephant grew in proportion to twice its normal height, then the area of its ears would be multiplied by

Accepted Answer

A) two 
B) four 
C) six 
D) eight
And its total weight would be multiplied by 
E) two.
F)four.
G)six.
H)eight. 
A) two 
B) four 
C) six 
D) eight
And its total weight would be multiplied by 
E) two.
F)four.
G)six.
H)eight.

Question 2

Ohm's law tells us that the amount of current produced in a circuit is

Accepted Answer

A) directly proportional to voltage. 
B) inversely proportional to resistance. 
C) both of these.
Which means that current in a conductor can be increased by 
D) increasing the voltage across it 
E) reducing its resistance
F)both of these
G)none of the above 
A) directly proportional to voltage. 
B) inversely proportional to resistance. 
C) both of these.
Which means that current in a conductor can be increased by 
D) increasing the voltage across it 
E) reducing its resistance
F)both of these
G)none of the above

Question 3

A long horizontal wooden beam supported at its ends sags when you sit in the middle. Due to bending, the top part of the beam is under

Accepted Answer

A) tension 
B) compression
And the bottom of the beam is under 
C) tension. 
D) compression.
And the part of a beam where no tension or compression occurs 
E) along the center of the beam.
F)along the neutral layer.
G)both of these
H)none of these 
A) tension 
B) compression
And the bottom of the beam is under 
C) tension. 
D) compression.
And the part of a beam where no tension or compression occurs 
E) along the center of the beam.
F)along the neutral layer.
G)both of these
H)none of these

Question 4

Which of the following has the greater weight?

Accepted Answer

A) 1 kilogram of gold 
B) 1 kilogram of feathers 
C) both weigh the same in the same locality
This follows from the fact that 
D) gold is more compact than feathers. 
E) weight and mass are directly proportional to each other. 
A) 1 kilogram of gold 
B) 1 kilogram of feathers 
C) both weigh the same in the same locality
This follows from the fact that 
D) gold is more compact than feathers. 
E) weight and mass are directly proportional to each other.

Question 5

The Uncertainty Principle states that

Accepted Answer

A) all measurements are essentially incorrect to some degree. 
B) no measurement is exact. 
C) we cannot in principle know both the position and momentum (or energy and time)of a particle with absolute certainty. 
D) science itself is essentially uncertain.
The Uncertainty Principle is applicable 
E) only in the atomic domain.
F)in all physical domains, from the nuclear to the cosmic.
G)in all areas of good theory, scientific or otherwise. 
A) all measurements are essentially incorrect to some degree. 
B) no measurement is exact. 
C) we cannot in principle know both the position and momentum (or energy and time)of a particle with absolute certainty. 
D) science itself is essentially uncertain.
The Uncertainty Principle is applicable 
E) only in the atomic domain.
F)in all physical domains, from the nuclear to the cosmic.
G)in all areas of good theory, scientific or otherwise.

Question 6

A boat in a small pool is loaded with a barrel full of water. If the water in the barrel is poured overboard, into the pool, the boat will

Accepted Answer

A) sink farther into the water, 
B) ride higher in the water, 
C) ride no higher or lower in the water,
And the water level at the side of the pool will 
D) rise. 
E) fall.
F)remain unchanged. 
A) sink farther into the water, 
B) ride higher in the water, 
C) ride no higher or lower in the water,
And the water level at the side of the pool will 
D) rise. 
E) fall.
F)remain unchanged.

Question 7

If the Sun collapsed to a neutron star or black hole, Earth would

Accepted Answer

A) spiral into the Sun's core, 
B) remain in its present orbit, 
C) spiral away from the Sun, 
D) itself undergo collapse,
For the variable that changes in Newton's gravitational equation is 
E) distance.
F)the mass of the Sun.
G)the mass of Earth.
H)all of these.
I)none of these. 
A) spiral into the Sun's core, 
B) remain in its present orbit, 
C) spiral away from the Sun, 
D) itself undergo collapse,
For the variable that changes in Newton's gravitational equation is 
E) distance.
F)the mass of the Sun.
G)the mass of Earth.
H)all of these.
I)none of these.

Question 8

The atoms that make up a newborn baby were made

Accepted Answer

A) in the mother's womb, 
B) from the food that the mother ate, 
C) in the ancient stars,
While all atoms heavier than copper were manufactured by processes 
D) photosynthesis. 
E) atomic fabrication.
F)supernova explosions.
G)radioactivity.
H)none of these. 
A) in the mother's womb, 
B) from the food that the mother ate, 
C) in the ancient stars,
While all atoms heavier than copper were manufactured by processes 
D) photosynthesis. 
E) atomic fabrication.
F)supernova explosions.
G)radioactivity.
H)none of these.

Question 9

Figure E-3
  
-To lift the 5000-N block, the man finds that he must pull 10 m of rope through his hands for every 1 m the block rises. Neglecting the weights of the pulleys and friction, how hard must the man pull on the rope to raise the block?

Accepted Answer

A) 5 N 
B) 50 N 
C) 500 N 
D) 5000 N
Which is in accord with 
E) Newton's second law.
F)that impulse equals change in momentum.
G)(F × d)input = (F × d)output.
H)mechanical energy can be stored as potential energy. 
A) 5 N 
B) 50 N 
C) 500 N 
D) 5000 N
Which is in accord with 
E) Newton's second law.
F)that impulse equals change in momentum.
G)(F × d)input = (F × d)output.
H)mechanical energy can be stored as potential energy.

Question 10

According to the equation Ft = change in (mv), a foam rubber dashboard is safer than a metal one, for the force of impact, F, of an occupant against the dash is lessened in an accident. In this case, the "m" in this equation represents the

Accepted Answer

A) mass of the car, 
B) mass of the person, 
C) momentum of the car, 
D) momentum of the person,
And the "v" represents the 
E) velocity of the car.
F)speed at which the person hits the dashboard.
G)relative velocity between cars in a collision.
H)change in velocity, which is 10 m/s2. 
A) mass of the car, 
B) mass of the person, 
C) momentum of the car, 
D) momentum of the person,
And the "v" represents the 
E) velocity of the car.
F)speed at which the person hits the dashboard.
G)relative velocity between cars in a collision.
H)change in velocity, which is 10 m/s2.

Question 11

Evaporation of water from a tea kettle takes place

Accepted Answer

A) at the surface of the water, 
B) at the bottom of the water, 
C) throughout the water,
Whereas boiling takes place 
D) at the surface of the water. 
E) at the bottom of the water.
F)throughout the water. 
A) at the surface of the water, 
B) at the bottom of the water, 
C) throughout the water,
Whereas boiling takes place 
D) at the surface of the water. 
E) at the bottom of the water.
F)throughout the water.

Question 12

What determines what element a configuration of protons, neutrons and electrons will be is

Accepted Answer

A) the number of protons, 
B) the number of neutrons, 
C) the mass of protons and neutrons,
And the principal variable that determines whether the atoms will form a solid, liquid, gaseous, or plasma phase is 
D) atomic number. 
E) atomic weight.
F)density.
G)temperature. 
A) the number of protons, 
B) the number of neutrons, 
C) the mass of protons and neutrons,
And the principal variable that determines whether the atoms will form a solid, liquid, gaseous, or plasma phase is 
D) atomic number. 
E) atomic weight.
F)density.
G)temperature.

Question 13

In a 120-volt circuit, 120 joules of

Accepted Answer

A) charge move each second, which makes up the current, 
B) energy are given to each unit of charge that makes up the current, 
C) energy are given to each unit of resistance in the circuit,
And if the current is 1 ampere, then 
D) 1 unit of charge per second passes any point in the circuit. 
E) 120 units of charge per second pass any point in the circuit.
F)the resistance of the circuit is 1 ohm. 
A) charge move each second, which makes up the current, 
B) energy are given to each unit of charge that makes up the current, 
C) energy are given to each unit of resistance in the circuit,
And if the current is 1 ampere, then 
D) 1 unit of charge per second passes any point in the circuit. 
E) 120 units of charge per second pass any point in the circuit.
F)the resistance of the circuit is 1 ohm.

Question 14

-A block is pulled across a floor as shown in the vector diagram. The force vector F has the greater component in the

Accepted Answer

A) horizontal direction, 
B) vertical direction,And this component is 
C) larger than the vector F. 
D) smaller than the vector F. 
E) equal to the vector F. 
A) horizontal direction, 
B) vertical direction,And this component is 
C) larger than the vector F. 
D) smaller than the vector F. 
E) equal to the vector F.

Question 15

Figure N-8
  
-The trajectory of a cannonball fired from a canon depends on

Accepted Answer

A) the initial velocity. 
B) the angle of projection. 
C) the effects of air resistance. 
D) all of these.
When air resistance does affect motion, the cannonball doesn't travel 
E) as high.
F)as far.
G)as high and as far. 
A) the initial velocity. 
B) the angle of projection. 
C) the effects of air resistance. 
D) all of these.
When air resistance does affect motion, the cannonball doesn't travel 
E) as high.
F)as far.
G)as high and as far.

Question 16

A garden hose is held at an angle of 50°. Neglecting air resistance, the water will travel exactly the same horizontal distance before returning to the same level if the hose is held at an angle of

Accepted Answer

A) 40°. 
B) 45°. 
C) 60°.
For maximum range, the hose should be held at 
D) 40° 
E) 45°
F)55°
G)60° 
A) 40°. 
B) 45°. 
C) 60°.
For maximum range, the hose should be held at 
D) 40° 
E) 45°
F)55°
G)60°

Question 17

To say that an object is being accelerated, means that

Accepted Answer

A) it is at rest, 
B) it is moving, 
C) it is either at a state of rest or a state of constant velocity, 
D) its state of motion is changing,
And we define acceleration to be 
E) a change in speed.
F)a change in velocity.
G)the rate at which speed changes.
H)the rate at which velocity changes. 
A) it is at rest, 
B) it is moving, 
C) it is either at a state of rest or a state of constant velocity, 
D) its state of motion is changing,
And we define acceleration to be 
E) a change in speed.
F)a change in velocity.
G)the rate at which speed changes.
H)the rate at which velocity changes.

Question 18

When a metal plate with a hole in it is cooled, the size of the hole becomes

Accepted Answer

A) smaller, 
B) larger, 
C) remains the same size,
And when the plate is heated, the hole becomes 
D) smaller. 
E) larger.
F)remains the same size. 
A) smaller, 
B) larger, 
C) remains the same size,
And when the plate is heated, the hole becomes 
D) smaller. 
E) larger.
F)remains the same size.

Question 19

Figure S-3
  
-A V-shaped bow wave is produced when a boat moves

Accepted Answer

A) more slowly than the velocity of waves in the water. 
B) as fast as the waves in the water. 
C) faster than the velocity of waves in the water. 
D) at any speed, slower or faster than the water waves.
Which bow wave corresponds to the faster-moving boat? 
E) I
F)II 
A) more slowly than the velocity of waves in the water. 
B) as fast as the waves in the water. 
C) faster than the velocity of waves in the water. 
D) at any speed, slower or faster than the water waves.
Which bow wave corresponds to the faster-moving boat? 
E) I
F)II

Question 20

The density of a 57-kg (126-lb)person who can float in salt water but not in fresh water is about

Accepted Answer

A) 505 kg/m3 (32 lb/ft3) 
B) 1010 kg/m3 (63 lb/ft3) 
C) 2020 kg/m3 (126 lb/ft3) 
D) 4040 kg/m3 (252 lb/ft3)
And has a volume of about 
E) 1 ft3.
F)2 ft3.
G)3 ft3.
H)4 ft3.
I)need more information 
A) 505 kg/m3 (32 lb/ft3) 
B) 1010 kg/m3 (63 lb/ft3) 
C) 2020 kg/m3 (126 lb/ft3) 
D) 4040 kg/m3 (252 lb/ft3)
And has a volume of about 
E) 1 ft3.
F)2 ft3.
G)3 ft3.
H)4 ft3.
I)need more information

Exam 37: Systems of Measurement

If an elephant grew in proportion to twice its normal height, then the area of its ears would be multiplied by

Ohm's law tells us that the amount of current produced in a circuit is

A long horizontal wooden beam supported at its ends sags when you sit in the middle. Due to bending, the top part of the beam is under

Which of the following has the greater weight?

The Uncertainty Principle states that

A boat in a small pool is loaded with a barrel full of water. If the water in the barrel is poured overboard, into the pool, the boat will

If the Sun collapsed to a neutron star or black hole, Earth would

The atoms that make up a newborn baby were made

Figure E-3 -To lift the 5000-N block, the man finds that he must pull 10 m of rope through his hands for every 1 m the block rises. Neglecting the weights of the pulleys and friction, how hard must the man pull on the rope to raise the block?

According to the equation Ft = change in (mv), a foam rubber dashboard is safer than a metal one, for the force of impact, F, of an occupant against the dash is lessened in an accident. In this case, the "m" in this equation represents the

Evaporation of water from a tea kettle takes place

What determines what element a configuration of protons, neutrons and electrons will be is

In a 120-volt circuit, 120 joules of

-A block is pulled across a floor as shown in the vector diagram. The force vector F has the greater component in the

Figure N-8 -The trajectory of a cannonball fired from a canon depends on

A garden hose is held at an angle of 50°. Neglecting air resistance, the water will travel exactly the same horizontal distance before returning to the same level if the hose is held at an angle of

To say that an object is being accelerated, means that

When a metal plate with a hole in it is cooled, the size of the hole becomes

Figure S-3 -A V-shaped bow wave is produced when a boat moves

The density of a 57-kg (126-lb)person who can float in salt water but not in fresh water is about

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