TEST BANK
TEST BANK
,University Physics, 13e (Young/Freedman)
Chapter 1 Units, Physical Quantities, and Vectors
1.1 Conceptual Questions
1) The current definition of the standard meter of length is based on
A) the distance between the earth’s equator and north pole.
B) the distance between the earth and the sun.
C) the distance traveled by light in a vacuum.
D) the length of a particular object kept in France.
Answer: C
Var: 1
2) The current definition of the standard second of time is based on
A) the frequency of radiation emitted by cesium atoms.
B) the earth’s rotation rate.
C) the duration of one year.
D) the oscillation of a particular pendulum kept in France.
Answer: A
Var: 1
3) The current definition of the standard kilogram of mass is based on
A) the mass of the earth.
B) the mass of the sun.
C) the mass of a particular object kept in France.
D) the mass of a cesium-133 atom.
Answer: C
Var: 1
4) If a woman weighs 125 lb, her mass expressed in kilograms is x kg, where x is
A) less than 125.
B) greater than 125.
Answer: A
Var: 1
,5) If a tree is 15 m tall, its height expressed in feet is x ft, where x is
A) less than 15.
B) greater than 15.
Answer: B
Var: 1
6) If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is
A) less than 6.5.
B) greater than 6.5.
Answer: B
Var: 1
7) If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is
A) less than 5.75.
B) greater than 5.75.
Answer: B
Var: 1
8) Scientists use the metric system chiefly because it is more accurate than the English system.
A) True
B) False
Answer: B
Var: 1
9) When adding two numbers, the number of significant figures in the sum is equal to the number of
significant figures in the least accurate of the numbers being added.
A) True
B) False
Answer: B
Var: 1
10) When determining the number of significant figures in a number, zeroes to the left of the decimal
point are never counted.
A) True
B) False
, Answer: B
Var: 1
11) Which of the following is an accurate statement?
A) The magnitude of a vector can be zero even though one of its components is not zero.
B) It is possible to add a scalar quantity to a vector.
C) Even though two vectors have unequal magnitudes, it is possible that their vector sum is zero.
D) Rotating a vector about an axis passing through the tip of the vector does not change the vector.
E) The magnitude of a vector is independent of the coordinate system used.
Answer: E
Var: 1
12) If A⃗ · B⃗ = 0, then the vectors A⃗ and B⃗ have equal magnitudes and are directed in the opposite
directions from each other.
A) True
B) False
Answer: B
Var: 1
13) Under what condition is |A⃗ - B⃗ | = A - B?
A) The magnitude of vector B⃗ is zero.
B) Vectors A⃗ and B⃗ are in opposite directions.
C) Vectors A⃗ and B⃗ are in the same direction.
D) Vectors A⃗ and B⃗ are in perpendicular directions.
E) The statement is never true.
Answer: B
Var: 1
14) If A > B, under what condition is |A⃗ - B⃗ | = A - B?
A) The statement is never true.
B) Vectors A⃗ and B⃗ are in opposite directions.
C) Vectors A⃗ and B⃗ are in the same direction.
D) Vectors A⃗ and B⃗ are in perpendicular directions.
TEST BANK
,University Physics, 13e (Young/Freedman)
Chapter 1 Units, Physical Quantities, and Vectors
1.1 Conceptual Questions
1) The current definition of the standard meter of length is based on
A) the distance between the earth’s equator and north pole.
B) the distance between the earth and the sun.
C) the distance traveled by light in a vacuum.
D) the length of a particular object kept in France.
Answer: C
Var: 1
2) The current definition of the standard second of time is based on
A) the frequency of radiation emitted by cesium atoms.
B) the earth’s rotation rate.
C) the duration of one year.
D) the oscillation of a particular pendulum kept in France.
Answer: A
Var: 1
3) The current definition of the standard kilogram of mass is based on
A) the mass of the earth.
B) the mass of the sun.
C) the mass of a particular object kept in France.
D) the mass of a cesium-133 atom.
Answer: C
Var: 1
4) If a woman weighs 125 lb, her mass expressed in kilograms is x kg, where x is
A) less than 125.
B) greater than 125.
Answer: A
Var: 1
,5) If a tree is 15 m tall, its height expressed in feet is x ft, where x is
A) less than 15.
B) greater than 15.
Answer: B
Var: 1
6) If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is
A) less than 6.5.
B) greater than 6.5.
Answer: B
Var: 1
7) If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is
A) less than 5.75.
B) greater than 5.75.
Answer: B
Var: 1
8) Scientists use the metric system chiefly because it is more accurate than the English system.
A) True
B) False
Answer: B
Var: 1
9) When adding two numbers, the number of significant figures in the sum is equal to the number of
significant figures in the least accurate of the numbers being added.
A) True
B) False
Answer: B
Var: 1
10) When determining the number of significant figures in a number, zeroes to the left of the decimal
point are never counted.
A) True
B) False
, Answer: B
Var: 1
11) Which of the following is an accurate statement?
A) The magnitude of a vector can be zero even though one of its components is not zero.
B) It is possible to add a scalar quantity to a vector.
C) Even though two vectors have unequal magnitudes, it is possible that their vector sum is zero.
D) Rotating a vector about an axis passing through the tip of the vector does not change the vector.
E) The magnitude of a vector is independent of the coordinate system used.
Answer: E
Var: 1
12) If A⃗ · B⃗ = 0, then the vectors A⃗ and B⃗ have equal magnitudes and are directed in the opposite
directions from each other.
A) True
B) False
Answer: B
Var: 1
13) Under what condition is |A⃗ - B⃗ | = A - B?
A) The magnitude of vector B⃗ is zero.
B) Vectors A⃗ and B⃗ are in opposite directions.
C) Vectors A⃗ and B⃗ are in the same direction.
D) Vectors A⃗ and B⃗ are in perpendicular directions.
E) The statement is never true.
Answer: B
Var: 1
14) If A > B, under what condition is |A⃗ - B⃗ | = A - B?
A) The statement is never true.
B) Vectors A⃗ and B⃗ are in opposite directions.
C) Vectors A⃗ and B⃗ are in the same direction.
D) Vectors A⃗ and B⃗ are in perpendicular directions.
